Home / 10,487.22-15,724.72-4,242.12

Finding the Fourth Proportional to 10,487.22, 15,724.72 and 4,242.12

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Solution

The fourth proportional to 10,487.22, 15,724.72 and 4,242.12 is: 6,360.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,487.22 : 15,724.72 = 4,242.12 : x
  2. Step 2: Convert to fraction form
    10,487.22/15,724.72 = 4,242.12/x
  3. Step 3: Cross multiply
    10,487.22x = 15,724.72 × 4,242.12
  4. Step 4: Simplify right side
    10,487.22x = 66,706,149.21
  5. Step 5: Solve for x
    x = 66,706,149.21/10,487.22
  6. Step 6: Final answer
    x = 6,360.71

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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.