Home / 20,759.57-28,654.31-11,812.07

Finding the Fourth Proportional to 20,759.57, 28,654.31 and 11,812.07

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Solution

The fourth proportional to 20,759.57, 28,654.31 and 11,812.07 is: 16,304.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.57 : 28,654.31 = 11,812.07 : x
  2. Step 2: Convert to fraction form
    20,759.57/28,654.31 = 11,812.07/x
  3. Step 3: Cross multiply
    20,759.57x = 28,654.31 × 11,812.07
  4. Step 4: Simplify right side
    20,759.57x = 338,466,715.52
  5. Step 5: Solve for x
    x = 338,466,715.52/20,759.57
  6. Step 6: Final answer
    x = 16,304.13

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1.5x scale

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.