Home / 10,440.47-15,663.26-3,420.86

Finding the Fourth Proportional to 10,440.47, 15,663.26 and 3,420.86

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Solution

The fourth proportional to 10,440.47, 15,663.26 and 3,420.86 is: 5,132.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,440.47 : 15,663.26 = 3,420.86 : x
  2. Step 2: Convert to fraction form
    10,440.47/15,663.26 = 3,420.86/x
  3. Step 3: Cross multiply
    10,440.47x = 15,663.26 × 3,420.86
  4. Step 4: Simplify right side
    10,440.47x = 53,581,724.18
  5. Step 5: Solve for x
    x = 53,581,724.18/10,440.47
  6. Step 6: Final answer
    x = 5,132.12

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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.