Home / 21,428.27-32,163.15-10,342.74

Finding the Fourth Proportional to 21,428.27, 32,163.15 and 10,342.74

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Solution

The fourth proportional to 21,428.27, 32,163.15 and 10,342.74 is: 15,524.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428.27 : 32,163.15 = 10,342.74 : x
  2. Step 2: Convert to fraction form
    21,428.27/32,163.15 = 10,342.74/x
  3. Step 3: Cross multiply
    21,428.27x = 32,163.15 × 10,342.74
  4. Step 4: Simplify right side
    21,428.27x = 332,655,098.03
  5. Step 5: Solve for x
    x = 332,655,098.03/21,428.27
  6. Step 6: Final answer
    x = 15,524.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.