Home / 10,449.90-15,663.87-3,428.10

Finding the Fourth Proportional to 10,449.90, 15,663.87 and 3,428.10

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Solution

The fourth proportional to 10,449.90, 15,663.87 and 3,428.10 is: 5,138.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,449.90 : 15,663.87 = 3,428.10 : x
  2. Step 2: Convert to fraction form
    10,449.90/15,663.87 = 3,428.10/x
  3. Step 3: Cross multiply
    10,449.90x = 15,663.87 × 3,428.10
  4. Step 4: Simplify right side
    10,449.90x = 53,697,312.75
  5. Step 5: Solve for x
    x = 53,697,312.75/10,449.90
  6. Step 6: Final answer
    x = 5,138.55

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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.