Home / 18,294.54-25,220.61-12,987.42

Finding the Fourth Proportional to 18,294.54, 25,220.61 and 12,987.42

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Solution

The fourth proportional to 18,294.54, 25,220.61 and 12,987.42 is: 17,904.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,294.54 : 25,220.61 = 12,987.42 : x
  2. Step 2: Convert to fraction form
    18,294.54/25,220.61 = 12,987.42/x
  3. Step 3: Cross multiply
    18,294.54x = 25,220.61 × 12,987.42
  4. Step 4: Simplify right side
    18,294.54x = 327,550,654.73
  5. Step 5: Solve for x
    x = 327,550,654.73/18,294.54
  6. Step 6: Final answer
    x = 17,904.28

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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.