Home / 20,542.68-28,348.92-12,992.27

Finding the Fourth Proportional to 20,542.68, 28,348.92 and 12,992.27

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Solution

The fourth proportional to 20,542.68, 28,348.92 and 12,992.27 is: 17,929.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,542.68 : 28,348.92 = 12,992.27 : x
  2. Step 2: Convert to fraction form
    20,542.68/28,348.92 = 12,992.27/x
  3. Step 3: Cross multiply
    20,542.68x = 28,348.92 × 12,992.27
  4. Step 4: Simplify right side
    20,542.68x = 368,316,681.10
  5. Step 5: Solve for x
    x = 368,316,681.10/20,542.68
  6. Step 6: Final answer
    x = 17,929.34

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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.