Home / 18,307.16-27,442.49-12,761.90

Finding the Fourth Proportional to 18,307.16, 27,442.49 and 12,761.90

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Solution

The fourth proportional to 18,307.16, 27,442.49 and 12,761.90 is: 19,130.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,307.16 : 27,442.49 = 12,761.90 : x
  2. Step 2: Convert to fraction form
    18,307.16/27,442.49 = 12,761.90/x
  3. Step 3: Cross multiply
    18,307.16x = 27,442.49 × 12,761.90
  4. Step 4: Simplify right side
    18,307.16x = 350,218,112.11
  5. Step 5: Solve for x
    x = 350,218,112.11/18,307.16
  6. Step 6: Final answer
    x = 19,130.12

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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.