Home / 38,431.53-57,581.69-20,869.92

Finding the Fourth Proportional to 38,431.53, 57,581.69 and 20,869.92

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Solution

The fourth proportional to 38,431.53, 57,581.69 and 20,869.92 is: 31,269.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,431.53 : 57,581.69 = 20,869.92 : x
  2. Step 2: Convert to fraction form
    38,431.53/57,581.69 = 20,869.92/x
  3. Step 3: Cross multiply
    38,431.53x = 57,581.69 × 20,869.92
  4. Step 4: Simplify right side
    38,431.53x = 1,201,725,159.42
  5. Step 5: Solve for x
    x = 1,201,725,159.42/38,431.53
  6. Step 6: Final answer
    x = 31,269.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.