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Finding the Fourth Proportional to 15,155.95, 22,737 and 6,390.85

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Solution

The fourth proportional to 15,155.95, 22,737 and 6,390.85 is: 9,587.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.95 : 22,737 = 6,390.85 : x
  2. Step 2: Convert to fraction form
    15,155.95/22,737 = 6,390.85/x
  3. Step 3: Cross multiply
    15,155.95x = 22,737 × 6,390.85
  4. Step 4: Simplify right side
    15,155.95x = 145,308,756.45
  5. Step 5: Solve for x
    x = 145,308,756.45/15,155.95
  6. Step 6: Final answer
    x = 9,587.57

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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.