Home / 10,479.60-15,719.40-4,242.60

Finding the Fourth Proportional to 10,479.60, 15,719.40 and 4,242.60

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Solution

The fourth proportional to 10,479.60, 15,719.40 and 4,242.60 is: 6,363.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,479.60 : 15,719.40 = 4,242.60 : x
  2. Step 2: Convert to fraction form
    10,479.60/15,719.40 = 4,242.60/x
  3. Step 3: Cross multiply
    10,479.60x = 15,719.40 × 4,242.60
  4. Step 4: Simplify right side
    10,479.60x = 66,691,126.44
  5. Step 5: Solve for x
    x = 66,691,126.44/10,479.60
  6. Step 6: Final answer
    x = 6,363.90

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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.