Home / 10,399.31-15,605.10-5,469.32

Finding the Fourth Proportional to 10,399.31, 15,605.10 and 5,469.32

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Solution

The fourth proportional to 10,399.31, 15,605.10 and 5,469.32 is: 8,207.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,399.31 : 15,605.10 = 5,469.32 : x
  2. Step 2: Convert to fraction form
    10,399.31/15,605.10 = 5,469.32/x
  3. Step 3: Cross multiply
    10,399.31x = 15,605.10 × 5,469.32
  4. Step 4: Simplify right side
    10,399.31x = 85,349,207.51
  5. Step 5: Solve for x
    x = 85,349,207.51/10,399.31
  6. Step 6: Final answer
    x = 8,207.20

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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.