Home / 20,332.92-28,076.75-12,791.88

Finding the Fourth Proportional to 20,332.92, 28,076.75 and 12,791.88

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Solution

The fourth proportional to 20,332.92, 28,076.75 and 12,791.88 is: 17,663.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.92 : 28,076.75 = 12,791.88 : x
  2. Step 2: Convert to fraction form
    20,332.92/28,076.75 = 12,791.88/x
  3. Step 3: Cross multiply
    20,332.92x = 28,076.75 × 12,791.88
  4. Step 4: Simplify right side
    20,332.92x = 359,154,416.79
  5. Step 5: Solve for x
    x = 359,154,416.79/20,332.92
  6. Step 6: Final answer
    x = 17,663.69

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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.