Home / 20,770,158.30-31,155,237.45-11,812,206.30

Finding the Fourth Proportional to 20,770,158.30, 31,155,237.45 and 11,812,206.30

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Solution

The fourth proportional to 20,770,158.30, 31,155,237.45 and 11,812,206.30 is: 17,718,309.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770,158.30 : 31,155,237.45 = 11,812,206.30 : x
  2. Step 2: Convert to fraction form
    20,770,158.30/31,155,237.45 = 11,812,206.30/x
  3. Step 3: Cross multiply
    20,770,158.30x = 31,155,237.45 × 11,812,206.30
  4. Step 4: Simplify right side
    20,770,158.30x = 368,012,092,084,885.94
  5. Step 5: Solve for x
    x = 368,012,092,084,885.94/20,770,158.30
  6. Step 6: Final answer
    x = 17,718,309.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.