Home / 20,721,871,468.68-28,596,268,783.44-11,206,423,217.67

Finding the Fourth Proportional to 20,721,871,468.68, 28,596,268,783.44 and 11,206,423,217.67

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Solution

The fourth proportional to 20,721,871,468.68, 28,596,268,783.44 and 11,206,423,217.67 is: 15,464,910,634.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721,871,468.68 : 28,596,268,783.44 = 11,206,423,217.67 : x
  2. Step 2: Convert to fraction form
    20,721,871,468.68/28,596,268,783.44 = 11,206,423,217.67/x
  3. Step 3: Cross multiply
    20,721,871,468.68x = 28,596,268,783.44 × 11,206,423,217.67
  4. Step 4: Simplify right side
    20,721,871,468.68x = 320,461,890,433,473,839,104
  5. Step 5: Solve for x
    x = 320,461,890,433,473,839,104/20,721,871,468.68
  6. Step 6: Final answer
    x = 15,464,910,634.05

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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.