Home / 22,711.96-31,345.08-13,759.30

Finding the Fourth Proportional to 22,711.96, 31,345.08 and 13,759.30

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Solution

The fourth proportional to 22,711.96, 31,345.08 and 13,759.30 is: 18,989.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,711.96 : 31,345.08 = 13,759.30 : x
  2. Step 2: Convert to fraction form
    22,711.96/31,345.08 = 13,759.30/x
  3. Step 3: Cross multiply
    22,711.96x = 31,345.08 × 13,759.30
  4. Step 4: Simplify right side
    22,711.96x = 431,286,359.24
  5. Step 5: Solve for x
    x = 431,286,359.24/22,711.96
  6. Step 6: Final answer
    x = 18,989.39

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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.