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Finding the Fourth Proportional to 28,001.88, 42,007.08 and 9,529.56

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Solution

The fourth proportional to 28,001.88, 42,007.08 and 9,529.56 is: 14,295.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.88 : 42,007.08 = 9,529.56 : x
  2. Step 2: Convert to fraction form
    28,001.88/42,007.08 = 9,529.56/x
  3. Step 3: Cross multiply
    28,001.88x = 42,007.08 × 9,529.56
  4. Step 4: Simplify right side
    28,001.88x = 400,308,989.28
  5. Step 5: Solve for x
    x = 400,308,989.28/28,001.88
  6. Step 6: Final answer
    x = 14,295.79

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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.