Home / 28,080.17-42,138.36-18,083.87

Finding the Fourth Proportional to 28,080.17, 42,138.36 and 18,083.87

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Solution

The fourth proportional to 28,080.17, 42,138.36 and 18,083.87 is: 27,137.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,080.17 : 42,138.36 = 18,083.87 : x
  2. Step 2: Convert to fraction form
    28,080.17/42,138.36 = 18,083.87/x
  3. Step 3: Cross multiply
    28,080.17x = 42,138.36 × 18,083.87
  4. Step 4: Simplify right side
    28,080.17x = 762,024,707.13
  5. Step 5: Solve for x
    x = 762,024,707.13/28,080.17
  6. Step 6: Final answer
    x = 27,137.47

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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.