Home / 21,151.93-29,189.02-11,591.70

Finding the Fourth Proportional to 21,151.93, 29,189.02 and 11,591.70

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Solution

The fourth proportional to 21,151.93, 29,189.02 and 11,591.70 is: 15,996.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.93 : 29,189.02 = 11,591.70 : x
  2. Step 2: Convert to fraction form
    21,151.93/29,189.02 = 11,591.70/x
  3. Step 3: Cross multiply
    21,151.93x = 29,189.02 × 11,591.70
  4. Step 4: Simplify right side
    21,151.93x = 338,350,217.19
  5. Step 5: Solve for x
    x = 338,350,217.19/21,151.93
  6. Step 6: Final answer
    x = 15,996.19

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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.