Home / 28,080.98-42,100.66-13,272.59

Finding the Fourth Proportional to 28,080.98, 42,100.66 and 13,272.59

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Solution

The fourth proportional to 28,080.98, 42,100.66 and 13,272.59 is: 19,899.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,080.98 : 42,100.66 = 13,272.59 : x
  2. Step 2: Convert to fraction form
    28,080.98/42,100.66 = 13,272.59/x
  3. Step 3: Cross multiply
    28,080.98x = 42,100.66 × 13,272.59
  4. Step 4: Simplify right side
    28,080.98x = 558,784,920.75
  5. Step 5: Solve for x
    x = 558,784,920.75/28,080.98
  6. Step 6: Final answer
    x = 19,899.05

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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.