Home / 20,132.27-30,210.28-7,662.79

Finding the Fourth Proportional to 20,132.27, 30,210.28 and 7,662.79

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Solution

The fourth proportional to 20,132.27, 30,210.28 and 7,662.79 is: 11,498.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.27 : 30,210.28 = 7,662.79 : x
  2. Step 2: Convert to fraction form
    20,132.27/30,210.28 = 7,662.79/x
  3. Step 3: Cross multiply
    20,132.27x = 30,210.28 × 7,662.79
  4. Step 4: Simplify right side
    20,132.27x = 231,495,031.48
  5. Step 5: Solve for x
    x = 231,495,031.48/20,132.27
  6. Step 6: Final answer
    x = 11,498.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.