Home / 10,016.20-15,002.70-8,720.20

Finding the Fourth Proportional to 10,016.20, 15,002.70 and 8,720.20

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Solution

The fourth proportional to 10,016.20, 15,002.70 and 8,720.20 is: 13,061.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,016.20 : 15,002.70 = 8,720.20 : x
  2. Step 2: Convert to fraction form
    10,016.20/15,002.70 = 8,720.20/x
  3. Step 3: Cross multiply
    10,016.20x = 15,002.70 × 8,720.20
  4. Step 4: Simplify right side
    10,016.20x = 130,826,544.54
  5. Step 5: Solve for x
    x = 130,826,544.54/10,016.20
  6. Step 6: Final answer
    x = 13,061.49

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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.