Home / 20,721,871,470.68-28,596,268,786.20-11,206,423,219.67

Finding the Fourth Proportional to 20,721,871,470.68, 28,596,268,786.20 and 11,206,423,219.67

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Solution

The fourth proportional to 20,721,871,470.68, 28,596,268,786.20 and 11,206,423,219.67 is: 15,464,910,636.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721,871,470.68 : 28,596,268,786.20 = 11,206,423,219.67 : x
  2. Step 2: Convert to fraction form
    20,721,871,470.68/28,596,268,786.20 = 11,206,423,219.67/x
  3. Step 3: Cross multiply
    20,721,871,470.68x = 28,596,268,786.20 × 11,206,423,219.67
  4. Step 4: Simplify right side
    20,721,871,470.68x = 320,461,890,521,596,166,144
  5. Step 5: Solve for x
    x = 320,461,890,521,596,166,144/20,721,871,470.68
  6. Step 6: Final answer
    x = 15,464,910,636.81

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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.