Home / 18,611.34-25,672.12-12,238.66

Finding the Fourth Proportional to 18,611.34, 25,672.12 and 12,238.66

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Solution

The fourth proportional to 18,611.34, 25,672.12 and 12,238.66 is: 16,881.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.34 : 25,672.12 = 12,238.66 : x
  2. Step 2: Convert to fraction form
    18,611.34/25,672.12 = 12,238.66/x
  3. Step 3: Cross multiply
    18,611.34x = 25,672.12 × 12,238.66
  4. Step 4: Simplify right side
    18,611.34x = 314,192,348.16
  5. Step 5: Solve for x
    x = 314,192,348.16/18,611.34
  6. Step 6: Final answer
    x = 16,881.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.