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Finding the Fourth Proportional to 18,456.78, 25,482.62 and 14,200.34

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Solution

The fourth proportional to 18,456.78, 25,482.62 and 14,200.34 is: 19,605.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456.78 : 25,482.62 = 14,200.34 : x
  2. Step 2: Convert to fraction form
    18,456.78/25,482.62 = 14,200.34/x
  3. Step 3: Cross multiply
    18,456.78x = 25,482.62 × 14,200.34
  4. Step 4: Simplify right side
    18,456.78x = 361,861,868.09
  5. Step 5: Solve for x
    x = 361,861,868.09/18,456.78
  6. Step 6: Final answer
    x = 19,605.90

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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.