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Finding the Fourth Proportional to 16,311.52, 22,509.89 and 9,239.31

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Solution

The fourth proportional to 16,311.52, 22,509.89 and 9,239.31 is: 12,750.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,311.52 : 22,509.89 = 9,239.31 : x
  2. Step 2: Convert to fraction form
    16,311.52/22,509.89 = 9,239.31/x
  3. Step 3: Cross multiply
    16,311.52x = 22,509.89 × 9,239.31
  4. Step 4: Simplify right side
    16,311.52x = 207,975,840.23
  5. Step 5: Solve for x
    x = 207,975,840.23/16,311.52
  6. Step 6: Final answer
    x = 12,750.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.