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Finding the Fourth Proportional to 15,138.82, 22,706.79 and 4,748.74

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Solution

The fourth proportional to 15,138.82, 22,706.79 and 4,748.74 is: 7,122.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138.82 : 22,706.79 = 4,748.74 : x
  2. Step 2: Convert to fraction form
    15,138.82/22,706.79 = 4,748.74/x
  3. Step 3: Cross multiply
    15,138.82x = 22,706.79 × 4,748.74
  4. Step 4: Simplify right side
    15,138.82x = 107,828,641.94
  5. Step 5: Solve for x
    x = 107,828,641.94/15,138.82
  6. Step 6: Final answer
    x = 7,122.66

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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.