Home / 20,845.52-28,760.92-12,343.92

Finding the Fourth Proportional to 20,845.52, 28,760.92 and 12,343.92

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Solution

The fourth proportional to 20,845.52, 28,760.92 and 12,343.92 is: 17,031.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.52 : 28,760.92 = 12,343.92 : x
  2. Step 2: Convert to fraction form
    20,845.52/28,760.92 = 12,343.92/x
  3. Step 3: Cross multiply
    20,845.52x = 28,760.92 × 12,343.92
  4. Step 4: Simplify right side
    20,845.52x = 355,022,495.61
  5. Step 5: Solve for x
    x = 355,022,495.61/20,845.52
  6. Step 6: Final answer
    x = 17,031.12

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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.