Home / 21,149.04-29,191.68-12,766.08

Finding the Fourth Proportional to 21,149.04, 29,191.68 and 12,766.08

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Solution

The fourth proportional to 21,149.04, 29,191.68 and 12,766.08 is: 17,620.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.04 : 29,191.68 = 12,766.08 : x
  2. Step 2: Convert to fraction form
    21,149.04/29,191.68 = 12,766.08/x
  3. Step 3: Cross multiply
    21,149.04x = 29,191.68 × 12,766.08
  4. Step 4: Simplify right side
    21,149.04x = 372,663,322.21
  5. Step 5: Solve for x
    x = 372,663,322.21/21,149.04
  6. Step 6: Final answer
    x = 17,620.82

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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.