Home / 10,388.40-15,546.15-7,107.90

Finding the Fourth Proportional to 10,388.40, 15,546.15 and 7,107.90

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Solution

The fourth proportional to 10,388.40, 15,546.15 and 7,107.90 is: 10,636.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,388.40 : 15,546.15 = 7,107.90 : x
  2. Step 2: Convert to fraction form
    10,388.40/15,546.15 = 7,107.90/x
  3. Step 3: Cross multiply
    10,388.40x = 15,546.15 × 7,107.90
  4. Step 4: Simplify right side
    10,388.40x = 110,500,479.59
  5. Step 5: Solve for x
    x = 110,500,479.59/10,388.40
  6. Step 6: Final answer
    x = 10,636.91

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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.