Home / 20,177.20-30,290.10-20,031.40

Finding the Fourth Proportional to 20,177.20, 30,290.10 and 20,031.40

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Solution

The fourth proportional to 20,177.20, 30,290.10 and 20,031.40 is: 30,071.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,177.20 : 30,290.10 = 20,031.40 : x
  2. Step 2: Convert to fraction form
    20,177.20/30,290.10 = 20,031.40/x
  3. Step 3: Cross multiply
    20,177.20x = 30,290.10 × 20,031.40
  4. Step 4: Simplify right side
    20,177.20x = 606,753,109.14
  5. Step 5: Solve for x
    x = 606,753,109.14/20,177.20
  6. Step 6: Final answer
    x = 30,071.22

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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.