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Finding the Fourth Proportional to 15,110.40, 22,662.72 and 7,315.68

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Solution

The fourth proportional to 15,110.40, 22,662.72 and 7,315.68 is: 10,972.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,110.40 : 22,662.72 = 7,315.68 : x
  2. Step 2: Convert to fraction form
    15,110.40/22,662.72 = 7,315.68/x
  3. Step 3: Cross multiply
    15,110.40x = 22,662.72 × 7,315.68
  4. Step 4: Simplify right side
    15,110.40x = 165,793,207.45
  5. Step 5: Solve for x
    x = 165,793,207.45/15,110.40
  6. Step 6: Final answer
    x = 10,972.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.