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Finding the Fourth Proportional to 21,687.54, 32,535.66 and 9,207.47

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Solution

The fourth proportional to 21,687.54, 32,535.66 and 9,207.47 is: 13,813.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,687.54 : 32,535.66 = 9,207.47 : x
  2. Step 2: Convert to fraction form
    21,687.54/32,535.66 = 9,207.47/x
  3. Step 3: Cross multiply
    21,687.54x = 32,535.66 × 9,207.47
  4. Step 4: Simplify right side
    21,687.54x = 299,570,950.70
  5. Step 5: Solve for x
    x = 299,570,950.70/21,687.54
  6. Step 6: Final answer
    x = 13,813.04

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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.