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Finding the Fourth Proportional to 18,294.70, 25,246.62 and 9,911.20

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Solution

The fourth proportional to 18,294.70, 25,246.62 and 9,911.20 is: 13,677.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,294.70 : 25,246.62 = 9,911.20 : x
  2. Step 2: Convert to fraction form
    18,294.70/25,246.62 = 9,911.20/x
  3. Step 3: Cross multiply
    18,294.70x = 25,246.62 × 9,911.20
  4. Step 4: Simplify right side
    18,294.70x = 250,224,300.14
  5. Step 5: Solve for x
    x = 250,224,300.14/18,294.70
  6. Step 6: Final answer
    x = 13,677.42

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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.