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Finding the Fourth Proportional to 28,472.31, 42,709.61 and 10,701.11

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Solution

The fourth proportional to 28,472.31, 42,709.61 and 10,701.11 is: 16,052.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.31 : 42,709.61 = 10,701.11 : x
  2. Step 2: Convert to fraction form
    28,472.31/42,709.61 = 10,701.11/x
  3. Step 3: Cross multiply
    28,472.31x = 42,709.61 × 10,701.11
  4. Step 4: Simplify right side
    28,472.31x = 457,040,368.19
  5. Step 5: Solve for x
    x = 457,040,368.19/28,472.31
  6. Step 6: Final answer
    x = 16,052.10

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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.