Home / 10,040.40-15,070.20-8,581.20

Finding the Fourth Proportional to 10,040.40, 15,070.20 and 8,581.20

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Solution

The fourth proportional to 10,040.40, 15,070.20 and 8,581.20 is: 12,880.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,040.40 : 15,070.20 = 8,581.20 : x
  2. Step 2: Convert to fraction form
    10,040.40/15,070.20 = 8,581.20/x
  3. Step 3: Cross multiply
    10,040.40x = 15,070.20 × 8,581.20
  4. Step 4: Simplify right side
    10,040.40x = 129,320,400.24
  5. Step 5: Solve for x
    x = 129,320,400.24/10,040.40
  6. Step 6: Final answer
    x = 12,880.00

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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.