Home / 10,109.80-15,132.30-7,906.60

Finding the Fourth Proportional to 10,109.80, 15,132.30 and 7,906.60

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Solution

The fourth proportional to 10,109.80, 15,132.30 and 7,906.60 is: 11,834.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,109.80 : 15,132.30 = 7,906.60 : x
  2. Step 2: Convert to fraction form
    10,109.80/15,132.30 = 7,906.60/x
  3. Step 3: Cross multiply
    10,109.80x = 15,132.30 × 7,906.60
  4. Step 4: Simplify right side
    10,109.80x = 119,645,043.18
  5. Step 5: Solve for x
    x = 119,645,043.18/10,109.80
  6. Step 6: Final answer
    x = 11,834.56

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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.