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Finding the Fourth Proportional to 28,311.97, 42,465.51 and 9,591.61

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Solution

The fourth proportional to 28,311.97, 42,465.51 and 9,591.61 is: 14,386.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,311.97 : 42,465.51 = 9,591.61 : x
  2. Step 2: Convert to fraction form
    28,311.97/42,465.51 = 9,591.61/x
  3. Step 3: Cross multiply
    28,311.97x = 42,465.51 × 9,591.61
  4. Step 4: Simplify right side
    28,311.97x = 407,312,610.37
  5. Step 5: Solve for x
    x = 407,312,610.37/28,311.97
  6. Step 6: Final answer
    x = 14,386.59

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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.