Home / 21,125.65-29,151.42-12,626.09

Finding the Fourth Proportional to 21,125.65, 29,151.42 and 12,626.09

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Solution

The fourth proportional to 21,125.65, 29,151.42 and 12,626.09 is: 17,422.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.65 : 29,151.42 = 12,626.09 : x
  2. Step 2: Convert to fraction form
    21,125.65/29,151.42 = 12,626.09/x
  3. Step 3: Cross multiply
    21,125.65x = 29,151.42 × 12,626.09
  4. Step 4: Simplify right side
    21,125.65x = 368,068,452.55
  5. Step 5: Solve for x
    x = 368,068,452.55/21,125.65
  6. Step 6: Final answer
    x = 17,422.82

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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.