Home / 21,691.48-32,539.64-8,542.12

Finding the Fourth Proportional to 21,691.48, 32,539.64 and 8,542.12

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Solution

The fourth proportional to 21,691.48, 32,539.64 and 8,542.12 is: 12,814.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,691.48 : 32,539.64 = 8,542.12 : x
  2. Step 2: Convert to fraction form
    21,691.48/32,539.64 = 8,542.12/x
  3. Step 3: Cross multiply
    21,691.48x = 32,539.64 × 8,542.12
  4. Step 4: Simplify right side
    21,691.48x = 277,957,509.64
  5. Step 5: Solve for x
    x = 277,957,509.64/21,691.48
  6. Step 6: Final answer
    x = 12,814.13

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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.