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Finding the Fourth Proportional to 28,475.01, 42,708.13 and 9,750.71

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Solution

The fourth proportional to 28,475.01, 42,708.13 and 9,750.71 is: 14,624.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,475.01 : 42,708.13 = 9,750.71 : x
  2. Step 2: Convert to fraction form
    28,475.01/42,708.13 = 9,750.71/x
  3. Step 3: Cross multiply
    28,475.01x = 42,708.13 × 9,750.71
  4. Step 4: Simplify right side
    28,475.01x = 416,434,672.67
  5. Step 5: Solve for x
    x = 416,434,672.67/28,475.01
  6. Step 6: Final answer
    x = 14,624.57

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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.