Home / 20,182.20-30,248.10-10,325.40

Finding the Fourth Proportional to 20,182.20, 30,248.10 and 10,325.40

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Solution

The fourth proportional to 20,182.20, 30,248.10 and 10,325.40 is: 15,475.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,182.20 : 30,248.10 = 10,325.40 : x
  2. Step 2: Convert to fraction form
    20,182.20/30,248.10 = 10,325.40/x
  3. Step 3: Cross multiply
    20,182.20x = 30,248.10 × 10,325.40
  4. Step 4: Simplify right side
    20,182.20x = 312,323,731.74
  5. Step 5: Solve for x
    x = 312,323,731.74/20,182.20
  6. Step 6: Final answer
    x = 15,475.21

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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.