Home / 10,113.80-15,138.30-7,910.60

Finding the Fourth Proportional to 10,113.80, 15,138.30 and 7,910.60

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Solution

The fourth proportional to 10,113.80, 15,138.30 and 7,910.60 is: 11,840.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,113.80 : 15,138.30 = 7,910.60 : x
  2. Step 2: Convert to fraction form
    10,113.80/15,138.30 = 7,910.60/x
  3. Step 3: Cross multiply
    10,113.80x = 15,138.30 × 7,910.60
  4. Step 4: Simplify right side
    10,113.80x = 119,753,035.98
  5. Step 5: Solve for x
    x = 119,753,035.98/10,113.80
  6. Step 6: Final answer
    x = 11,840.56

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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.