Home / 10,112.30-15,168.45-9,205.10

Finding the Fourth Proportional to 10,112.30, 15,168.45 and 9,205.10

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Solution

The fourth proportional to 10,112.30, 15,168.45 and 9,205.10 is: 13,807.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,112.30 : 15,168.45 = 9,205.10 : x
  2. Step 2: Convert to fraction form
    10,112.30/15,168.45 = 9,205.10/x
  3. Step 3: Cross multiply
    10,112.30x = 15,168.45 × 9,205.10
  4. Step 4: Simplify right side
    10,112.30x = 139,627,099.10
  5. Step 5: Solve for x
    x = 139,627,099.10/10,112.30
  6. Step 6: Final answer
    x = 13,807.65

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Similar ratio
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1.5x scale

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.