Home / 28,065.88-42,119.61-13,279.33

Finding the Fourth Proportional to 28,065.88, 42,119.61 and 13,279.33

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Solution

The fourth proportional to 28,065.88, 42,119.61 and 13,279.33 is: 19,928.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,065.88 : 42,119.61 = 13,279.33 : x
  2. Step 2: Convert to fraction form
    28,065.88/42,119.61 = 13,279.33/x
  3. Step 3: Cross multiply
    28,065.88x = 42,119.61 × 13,279.33
  4. Step 4: Simplify right side
    28,065.88x = 559,320,200.66
  5. Step 5: Solve for x
    x = 559,320,200.66/28,065.88
  6. Step 6: Final answer
    x = 19,928.83

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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.