Home / 20,721,871,469.68-28,596,268,784.82-11,206,423,218.67

Finding the Fourth Proportional to 20,721,871,469.68, 28,596,268,784.82 and 11,206,423,218.67

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Solution

The fourth proportional to 20,721,871,469.68, 28,596,268,784.82 and 11,206,423,218.67 is: 15,464,910,635.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721,871,469.68 : 28,596,268,784.82 = 11,206,423,218.67 : x
  2. Step 2: Convert to fraction form
    20,721,871,469.68/28,596,268,784.82 = 11,206,423,218.67/x
  3. Step 3: Cross multiply
    20,721,871,469.68x = 28,596,268,784.82 × 11,206,423,218.67
  4. Step 4: Simplify right side
    20,721,871,469.68x = 320,461,890,477,535,002,624
  5. Step 5: Solve for x
    x = 320,461,890,477,535,002,624/20,721,871,469.68
  6. Step 6: Final answer
    x = 15,464,910,635.43

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.