Home / 22,988.28-31,718.27-13,422.75

Finding the Fourth Proportional to 22,988.28, 31,718.27 and 13,422.75

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Solution

The fourth proportional to 22,988.28, 31,718.27 and 13,422.75 is: 18,520.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,988.28 : 31,718.27 = 13,422.75 : x
  2. Step 2: Convert to fraction form
    22,988.28/31,718.27 = 13,422.75/x
  3. Step 3: Cross multiply
    22,988.28x = 31,718.27 × 13,422.75
  4. Step 4: Simplify right side
    22,988.28x = 425,746,341.53
  5. Step 5: Solve for x
    x = 425,746,341.53/22,988.28
  6. Step 6: Final answer
    x = 18,520.15

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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.