Home / 28,081.20-42,101.00-13,272.82

Finding the Fourth Proportional to 28,081.20, 42,101.00 and 13,272.82

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Solution

The fourth proportional to 28,081.20, 42,101.00 and 13,272.82 is: 19,899.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.20 : 42,101.00 = 13,272.82 : x
  2. Step 2: Convert to fraction form
    28,081.20/42,101.00 = 13,272.82/x
  3. Step 3: Cross multiply
    28,081.20x = 42,101.00 × 13,272.82
  4. Step 4: Simplify right side
    28,081.20x = 558,798,872.98
  5. Step 5: Solve for x
    x = 558,798,872.98/28,081.20
  6. Step 6: Final answer
    x = 19,899.39

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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.