Home / 21,678.12-32,491.84-9,193.92

Finding the Fourth Proportional to 21,678.12, 32,491.84 and 9,193.92

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Solution

The fourth proportional to 21,678.12, 32,491.84 and 9,193.92 is: 13,780.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,678.12 : 32,491.84 = 9,193.92 : x
  2. Step 2: Convert to fraction form
    21,678.12/32,491.84 = 9,193.92/x
  3. Step 3: Cross multiply
    21,678.12x = 32,491.84 × 9,193.92
  4. Step 4: Simplify right side
    21,678.12x = 298,727,377.61
  5. Step 5: Solve for x
    x = 298,727,377.61/21,678.12
  6. Step 6: Final answer
    x = 13,780.13

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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.