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Finding the Fourth Proportional to 18,805.59, 25,954.58 and 12,002.55

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Solution

The fourth proportional to 18,805.59, 25,954.58 and 12,002.55 is: 16,565.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.59 : 25,954.58 = 12,002.55 : x
  2. Step 2: Convert to fraction form
    18,805.59/25,954.58 = 12,002.55/x
  3. Step 3: Cross multiply
    18,805.59x = 25,954.58 × 12,002.55
  4. Step 4: Simplify right side
    18,805.59x = 311,521,116.61
  5. Step 5: Solve for x
    x = 311,521,116.61/18,805.59
  6. Step 6: Final answer
    x = 16,565.35

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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.