Home / 25,438.50-38,155.20-15,572.70

Finding the Fourth Proportional to 25,438.50, 38,155.20 and 15,572.70

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Solution

The fourth proportional to 25,438.50, 38,155.20 and 15,572.70 is: 23,357.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,438.50 : 38,155.20 = 15,572.70 : x
  2. Step 2: Convert to fraction form
    25,438.50/38,155.20 = 15,572.70/x
  3. Step 3: Cross multiply
    25,438.50x = 38,155.20 × 15,572.70
  4. Step 4: Simplify right side
    25,438.50x = 594,179,483.04
  5. Step 5: Solve for x
    x = 594,179,483.04/25,438.50
  6. Step 6: Final answer
    x = 23,357.49

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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.