Home / 21,253.82-29,293.53-15,939.41

Finding the Fourth Proportional to 21,253.82, 29,293.53 and 15,939.41

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Solution

The fourth proportional to 21,253.82, 29,293.53 and 15,939.41 is: 21,968.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,253.82 : 29,293.53 = 15,939.41 : x
  2. Step 2: Convert to fraction form
    21,253.82/29,293.53 = 15,939.41/x
  3. Step 3: Cross multiply
    21,253.82x = 29,293.53 × 15,939.41
  4. Step 4: Simplify right side
    21,253.82x = 466,921,585.02
  5. Step 5: Solve for x
    x = 466,921,585.02/21,253.82
  6. Step 6: Final answer
    x = 21,968.83

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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.