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Finding the Fourth Proportional to 15,176.19, 22,774.53 and 5,315.55

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Solution

The fourth proportional to 15,176.19, 22,774.53 and 5,315.55 is: 7,976.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,176.19 : 22,774.53 = 5,315.55 : x
  2. Step 2: Convert to fraction form
    15,176.19/22,774.53 = 5,315.55/x
  3. Step 3: Cross multiply
    15,176.19x = 22,774.53 × 5,315.55
  4. Step 4: Simplify right side
    15,176.19x = 121,059,152.94
  5. Step 5: Solve for x
    x = 121,059,152.94/15,176.19
  6. Step 6: Final answer
    x = 7,976.91

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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.