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Finding the Fourth Proportional to 28,007.34, 42,011.82 and 10,473.82

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Solution

The fourth proportional to 28,007.34, 42,011.82 and 10,473.82 is: 15,711.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,007.34 : 42,011.82 = 10,473.82 : x
  2. Step 2: Convert to fraction form
    28,007.34/42,011.82 = 10,473.82/x
  3. Step 3: Cross multiply
    28,007.34x = 42,011.82 × 10,473.82
  4. Step 4: Simplify right side
    28,007.34x = 440,024,240.55
  5. Step 5: Solve for x
    x = 440,024,240.55/28,007.34
  6. Step 6: Final answer
    x = 15,711.03

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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.