Home / 12,261.72-18,366.66-10,176.78

Finding the Fourth Proportional to 12,261.72, 18,366.66 and 10,176.78

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Solution

The fourth proportional to 12,261.72, 18,366.66 and 10,176.78 is: 15,243.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.72 : 18,366.66 = 10,176.78 : x
  2. Step 2: Convert to fraction form
    12,261.72/18,366.66 = 10,176.78/x
  3. Step 3: Cross multiply
    12,261.72x = 18,366.66 × 10,176.78
  4. Step 4: Simplify right side
    12,261.72x = 186,913,458.15
  5. Step 5: Solve for x
    x = 186,913,458.15/12,261.72
  6. Step 6: Final answer
    x = 15,243.66

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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.