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Finding the Fourth Proportional to 42,506.87, 63,763.88 and 12,924.97

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Solution

The fourth proportional to 42,506.87, 63,763.88 and 12,924.97 is: 19,388.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,506.87 : 63,763.88 = 12,924.97 : x
  2. Step 2: Convert to fraction form
    42,506.87/63,763.88 = 12,924.97/x
  3. Step 3: Cross multiply
    42,506.87x = 63,763.88 × 12,924.97
  4. Step 4: Simplify right side
    42,506.87x = 824,146,012.05
  5. Step 5: Solve for x
    x = 824,146,012.05/42,506.87
  6. Step 6: Final answer
    x = 19,388.54

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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.