Home / 22,869.28-31,562.40-13,438.72

Finding the Fourth Proportional to 22,869.28, 31,562.40 and 13,438.72

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Solution

The fourth proportional to 22,869.28, 31,562.40 and 13,438.72 is: 18,547.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,869.28 : 31,562.40 = 13,438.72 : x
  2. Step 2: Convert to fraction form
    22,869.28/31,562.40 = 13,438.72/x
  3. Step 3: Cross multiply
    22,869.28x = 31,562.40 × 13,438.72
  4. Step 4: Simplify right side
    22,869.28x = 424,158,256.13
  5. Step 5: Solve for x
    x = 424,158,256.13/22,869.28
  6. Step 6: Final answer
    x = 18,547.08

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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.