Home / 28,080.30-42,102.45-13,269.90

Finding the Fourth Proportional to 28,080.30, 42,102.45 and 13,269.90

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Solution

The fourth proportional to 28,080.30, 42,102.45 and 13,269.90 is: 19,896.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,080.30 : 42,102.45 = 13,269.90 : x
  2. Step 2: Convert to fraction form
    28,080.30/42,102.45 = 13,269.90/x
  3. Step 3: Cross multiply
    28,080.30x = 42,102.45 × 13,269.90
  4. Step 4: Simplify right side
    28,080.30x = 558,695,301.26
  5. Step 5: Solve for x
    x = 558,695,301.26/28,080.30
  6. Step 6: Final answer
    x = 19,896.34

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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.