Home / 25,519.80-38,279.70-19,687.80

Finding the Fourth Proportional to 25,519.80, 38,279.70 and 19,687.80

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Solution

The fourth proportional to 25,519.80, 38,279.70 and 19,687.80 is: 29,531.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,519.80 : 38,279.70 = 19,687.80 : x
  2. Step 2: Convert to fraction form
    25,519.80/38,279.70 = 19,687.80/x
  3. Step 3: Cross multiply
    25,519.80x = 38,279.70 × 19,687.80
  4. Step 4: Simplify right side
    25,519.80x = 753,643,077.66
  5. Step 5: Solve for x
    x = 753,643,077.66/25,519.80
  6. Step 6: Final answer
    x = 29,531.70

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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.