Home / 20,407.04-28,151.66-12,844.88

Finding the Fourth Proportional to 20,407.04, 28,151.66 and 12,844.88

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Solution

The fourth proportional to 20,407.04, 28,151.66 and 12,844.88 is: 17,719.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407.04 : 28,151.66 = 12,844.88 : x
  2. Step 2: Convert to fraction form
    20,407.04/28,151.66 = 12,844.88/x
  3. Step 3: Cross multiply
    20,407.04x = 28,151.66 × 12,844.88
  4. Step 4: Simplify right side
    20,407.04x = 361,604,630.28
  5. Step 5: Solve for x
    x = 361,604,630.28/20,407.04
  6. Step 6: Final answer
    x = 17,719.60

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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.