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Finding the Fourth Proportional to 42,544.80, 63,809.10 and 12,963.60

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Solution

The fourth proportional to 42,544.80, 63,809.10 and 12,963.60 is: 19,442.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,544.80 : 63,809.10 = 12,963.60 : x
  2. Step 2: Convert to fraction form
    42,544.80/63,809.10 = 12,963.60/x
  3. Step 3: Cross multiply
    42,544.80x = 63,809.10 × 12,963.60
  4. Step 4: Simplify right side
    42,544.80x = 827,195,648.76
  5. Step 5: Solve for x
    x = 827,195,648.76/42,544.80
  6. Step 6: Final answer
    x = 19,442.93

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1.5x scale

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.