Home / 10,400.10-15,585.56-5,459.75

Finding the Fourth Proportional to 10,400.10, 15,585.56 and 5,459.75

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Solution

The fourth proportional to 10,400.10, 15,585.56 and 5,459.75 is: 8,181.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,400.10 : 15,585.56 = 5,459.75 : x
  2. Step 2: Convert to fraction form
    10,400.10/15,585.56 = 5,459.75/x
  3. Step 3: Cross multiply
    10,400.10x = 15,585.56 × 5,459.75
  4. Step 4: Simplify right side
    10,400.10x = 85,093,353.28
  5. Step 5: Solve for x
    x = 85,093,353.28/10,400.10
  6. Step 6: Final answer
    x = 8,181.98

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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.