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Finding the Fourth Proportional to 15,120, 22,680 and 4,176

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Solution

The fourth proportional to 15,120, 22,680 and 4,176 is: 6,264

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,120 : 22,680 = 4,176 : x
  2. Step 2: Convert to fraction form
    15,120/22,680 = 4,176/x
  3. Step 3: Cross multiply
    15,120x = 22,680 × 4,176
  4. Step 4: Simplify right side
    15,120x = 94,711,680
  5. Step 5: Solve for x
    x = 94,711,680/15,120
  6. Step 6: Final answer
    x = 6,264

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