Home / 18,084.42-27,122.99-12,587.76

Finding the Fourth Proportional to 18,084.42, 27,122.99 and 12,587.76

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Solution

The fourth proportional to 18,084.42, 27,122.99 and 12,587.76 is: 18,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,084.42 : 27,122.99 = 12,587.76 : x
  2. Step 2: Convert to fraction form
    18,084.42/27,122.99 = 12,587.76/x
  3. Step 3: Cross multiply
    18,084.42x = 27,122.99 × 12,587.76
  4. Step 4: Simplify right side
    18,084.42x = 341,417,625.66
  5. Step 5: Solve for x
    x = 341,417,625.66/18,084.42
  6. Step 6: Final answer
    x = 18,879.10

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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.