Home / 20,186.20-30,254.10-10,329.40

Finding the Fourth Proportional to 20,186.20, 30,254.10 and 10,329.40

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Solution

The fourth proportional to 20,186.20, 30,254.10 and 10,329.40 is: 15,481.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186.20 : 30,254.10 = 10,329.40 : x
  2. Step 2: Convert to fraction form
    20,186.20/30,254.10 = 10,329.40/x
  3. Step 3: Cross multiply
    20,186.20x = 30,254.10 × 10,329.40
  4. Step 4: Simplify right side
    20,186.20x = 312,506,700.54
  5. Step 5: Solve for x
    x = 312,506,700.54/20,186.20
  6. Step 6: Final answer
    x = 15,481.21

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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.