Home / 38,502.40-57,772.80-21,875.20

Finding the Fourth Proportional to 38,502.40, 57,772.80 and 21,875.20

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Solution

The fourth proportional to 38,502.40, 57,772.80 and 21,875.20 is: 32,823.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,502.40 : 57,772.80 = 21,875.20 : x
  2. Step 2: Convert to fraction form
    38,502.40/57,772.80 = 21,875.20/x
  3. Step 3: Cross multiply
    38,502.40x = 57,772.80 × 21,875.20
  4. Step 4: Simplify right side
    38,502.40x = 1,263,791,554.56
  5. Step 5: Solve for x
    x = 1,263,791,554.56/38,502.40
  6. Step 6: Final answer
    x = 32,823.71

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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.