Home / 10,540.80-15,798.40-4,691.20

Finding the Fourth Proportional to 10,540.80, 15,798.40 and 4,691.20

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Solution

The fourth proportional to 10,540.80, 15,798.40 and 4,691.20 is: 7,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,540.80 : 15,798.40 = 4,691.20 : x
  2. Step 2: Convert to fraction form
    10,540.80/15,798.40 = 4,691.20/x
  3. Step 3: Cross multiply
    10,540.80x = 15,798.40 × 4,691.20
  4. Step 4: Simplify right side
    10,540.80x = 74,113,454.08
  5. Step 5: Solve for x
    x = 74,113,454.08/10,540.80
  6. Step 6: Final answer
    x = 7,031.10

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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.