Home / 28,155.87-42,233.82-9,432.45

Finding the Fourth Proportional to 28,155.87, 42,233.82 and 9,432.45

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Solution

The fourth proportional to 28,155.87, 42,233.82 and 9,432.45 is: 14,148.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155.87 : 42,233.82 = 9,432.45 : x
  2. Step 2: Convert to fraction form
    28,155.87/42,233.82 = 9,432.45/x
  3. Step 3: Cross multiply
    28,155.87x = 42,233.82 × 9,432.45
  4. Step 4: Simplify right side
    28,155.87x = 398,368,395.46
  5. Step 5: Solve for x
    x = 398,368,395.46/28,155.87
  6. Step 6: Final answer
    x = 14,148.68

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1.5x scale

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.