Home / 10,127.55-15,186.32-3,105.88

Finding the Fourth Proportional to 10,127.55, 15,186.32 and 3,105.88

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Solution

The fourth proportional to 10,127.55, 15,186.32 and 3,105.88 is: 4,657.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,127.55 : 15,186.32 = 3,105.88 : x
  2. Step 2: Convert to fraction form
    10,127.55/15,186.32 = 3,105.88/x
  3. Step 3: Cross multiply
    10,127.55x = 15,186.32 × 3,105.88
  4. Step 4: Simplify right side
    10,127.55x = 47,166,845.71
  5. Step 5: Solve for x
    x = 47,166,845.71/10,127.55
  6. Step 6: Final answer
    x = 4,657.28

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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.