Home / 21,147.13-29,155.38-18,194.68

Finding the Fourth Proportional to 21,147.13, 29,155.38 and 18,194.68

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Solution

The fourth proportional to 21,147.13, 29,155.38 and 18,194.68 is: 25,084.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,147.13 : 29,155.38 = 18,194.68 : x
  2. Step 2: Convert to fraction form
    21,147.13/29,155.38 = 18,194.68/x
  3. Step 3: Cross multiply
    21,147.13x = 29,155.38 × 18,194.68
  4. Step 4: Simplify right side
    21,147.13x = 530,472,809.38
  5. Step 5: Solve for x
    x = 530,472,809.38/21,147.13
  6. Step 6: Final answer
    x = 25,084.86

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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.