Home / 20,319.92-28,044.47-12,360.60

Finding the Fourth Proportional to 20,319.92, 28,044.47 and 12,360.60

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Solution

The fourth proportional to 20,319.92, 28,044.47 and 12,360.60 is: 17,059.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.92 : 28,044.47 = 12,360.60 : x
  2. Step 2: Convert to fraction form
    20,319.92/28,044.47 = 12,360.60/x
  3. Step 3: Cross multiply
    20,319.92x = 28,044.47 × 12,360.60
  4. Step 4: Simplify right side
    20,319.92x = 346,646,414.08
  5. Step 5: Solve for x
    x = 346,646,414.08/20,319.92
  6. Step 6: Final answer
    x = 17,059.44

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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.