Home / 22,515.12-31,062.69-13,565.43

Finding the Fourth Proportional to 22,515.12, 31,062.69 and 13,565.43

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Solution

The fourth proportional to 22,515.12, 31,062.69 and 13,565.43 is: 18,715.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,515.12 : 31,062.69 = 13,565.43 : x
  2. Step 2: Convert to fraction form
    22,515.12/31,062.69 = 13,565.43/x
  3. Step 3: Cross multiply
    22,515.12x = 31,062.69 × 13,565.43
  4. Step 4: Simplify right side
    22,515.12x = 421,378,746.81
  5. Step 5: Solve for x
    x = 421,378,746.81/22,515.12
  6. Step 6: Final answer
    x = 18,715.37

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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.