Home / 42,481.97-63,718.85-12,900.06

Finding the Fourth Proportional to 42,481.97, 63,718.85 and 12,900.06

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Solution

The fourth proportional to 42,481.97, 63,718.85 and 12,900.06 is: 19,348.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,481.97 : 63,718.85 = 12,900.06 : x
  2. Step 2: Convert to fraction form
    42,481.97/63,718.85 = 12,900.06/x
  3. Step 3: Cross multiply
    42,481.97x = 63,718.85 × 12,900.06
  4. Step 4: Simplify right side
    42,481.97x = 821,976,923.63
  5. Step 5: Solve for x
    x = 821,976,923.63/42,481.97
  6. Step 6: Final answer
    x = 19,348.84

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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.