Home / 21,244.52-31,865.56-10,158.86

Finding the Fourth Proportional to 21,244.52, 31,865.56 and 10,158.86

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Solution

The fourth proportional to 21,244.52, 31,865.56 and 10,158.86 is: 15,237.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,244.52 : 31,865.56 = 10,158.86 : x
  2. Step 2: Convert to fraction form
    21,244.52/31,865.56 = 10,158.86/x
  3. Step 3: Cross multiply
    21,244.52x = 31,865.56 × 10,158.86
  4. Step 4: Simplify right side
    21,244.52x = 323,717,762.86
  5. Step 5: Solve for x
    x = 323,717,762.86/21,244.52
  6. Step 6: Final answer
    x = 15,237.71

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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.