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Finding the Fourth Proportional to 16,409.31, 22,643.49 and 9,239.88

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Solution

The fourth proportional to 16,409.31, 22,643.49 and 9,239.88 is: 12,750.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,409.31 : 22,643.49 = 9,239.88 : x
  2. Step 2: Convert to fraction form
    16,409.31/22,643.49 = 9,239.88/x
  3. Step 3: Cross multiply
    16,409.31x = 22,643.49 × 9,239.88
  4. Step 4: Simplify right side
    16,409.31x = 209,223,130.38
  5. Step 5: Solve for x
    x = 209,223,130.38/16,409.31
  6. Step 6: Final answer
    x = 12,750.27

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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.