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Finding the Fourth Proportional to 18,294.85, 25,246.88 and 9,911.35

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Solution

The fourth proportional to 18,294.85, 25,246.88 and 9,911.35 is: 13,677.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,294.85 : 25,246.88 = 9,911.35 : x
  2. Step 2: Convert to fraction form
    18,294.85/25,246.88 = 9,911.35/x
  3. Step 3: Cross multiply
    18,294.85x = 25,246.88 × 9,911.35
  4. Step 4: Simplify right side
    18,294.85x = 250,230,625.75
  5. Step 5: Solve for x
    x = 250,230,625.75/18,294.85
  6. Step 6: Final answer
    x = 13,677.66

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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.