Home / 21,422.49-32,153.45-10,899.87

Finding the Fourth Proportional to 21,422.49, 32,153.45 and 10,899.87

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Solution

The fourth proportional to 21,422.49, 32,153.45 and 10,899.87 is: 16,359.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.49 : 32,153.45 = 10,899.87 : x
  2. Step 2: Convert to fraction form
    21,422.49/32,153.45 = 10,899.87/x
  3. Step 3: Cross multiply
    21,422.49x = 32,153.45 × 10,899.87
  4. Step 4: Simplify right side
    21,422.49x = 350,468,370.55
  5. Step 5: Solve for x
    x = 350,468,370.55/21,422.49
  6. Step 6: Final answer
    x = 16,359.83

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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.