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Finding the Fourth Proportional to 18,178.80, 25,099.17 and 13,922.34

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Solution

The fourth proportional to 18,178.80, 25,099.17 and 13,922.34 is: 19,222.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,178.80 : 25,099.17 = 13,922.34 : x
  2. Step 2: Convert to fraction form
    18,178.80/25,099.17 = 13,922.34/x
  3. Step 3: Cross multiply
    18,178.80x = 25,099.17 × 13,922.34
  4. Step 4: Simplify right side
    18,178.80x = 349,439,178.46
  5. Step 5: Solve for x
    x = 349,439,178.46/18,178.80
  6. Step 6: Final answer
    x = 19,222.35

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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.