Home / 12,177.95-18,145.62-10,869.39

Finding the Fourth Proportional to 12,177.95, 18,145.62 and 10,869.39

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Solution

The fourth proportional to 12,177.95, 18,145.62 and 10,869.39 is: 16,195.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,177.95 : 18,145.62 = 10,869.39 : x
  2. Step 2: Convert to fraction form
    12,177.95/18,145.62 = 10,869.39/x
  3. Step 3: Cross multiply
    12,177.95x = 18,145.62 × 10,869.39
  4. Step 4: Simplify right side
    12,177.95x = 197,231,820.57
  5. Step 5: Solve for x
    x = 197,231,820.57/12,177.95
  6. Step 6: Final answer
    x = 16,195.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.