Home / 28,489.16-42,733.60-7,712.66

Finding the Fourth Proportional to 28,489.16, 42,733.60 and 7,712.66

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Solution

The fourth proportional to 28,489.16, 42,733.60 and 7,712.66 is: 11,568.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.16 : 42,733.60 = 7,712.66 : x
  2. Step 2: Convert to fraction form
    28,489.16/42,733.60 = 7,712.66/x
  3. Step 3: Cross multiply
    28,489.16x = 42,733.60 × 7,712.66
  4. Step 4: Simplify right side
    28,489.16x = 329,589,727.38
  5. Step 5: Solve for x
    x = 329,589,727.38/28,489.16
  6. Step 6: Final answer
    x = 11,568.95

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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.