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Finding the Fourth Proportional to 18,294.84, 25,246.86 and 9,911.28

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Solution

The fourth proportional to 18,294.84, 25,246.86 and 9,911.28 is: 13,677.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,294.84 : 25,246.86 = 9,911.28 : x
  2. Step 2: Convert to fraction form
    18,294.84/25,246.86 = 9,911.28/x
  3. Step 3: Cross multiply
    18,294.84x = 25,246.86 × 9,911.28
  4. Step 4: Simplify right side
    18,294.84x = 250,228,698.58
  5. Step 5: Solve for x
    x = 250,228,698.58/18,294.84
  6. Step 6: Final answer
    x = 13,677.56

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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.