Home / 18,937.11-26,131.67-10,979.82

Finding the Fourth Proportional to 18,937.11, 26,131.67 and 10,979.82

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Solution

The fourth proportional to 18,937.11, 26,131.67 and 10,979.82 is: 15,151.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937.11 : 26,131.67 = 10,979.82 : x
  2. Step 2: Convert to fraction form
    18,937.11/26,131.67 = 10,979.82/x
  3. Step 3: Cross multiply
    18,937.11x = 26,131.67 × 10,979.82
  4. Step 4: Simplify right side
    18,937.11x = 286,920,978.00
  5. Step 5: Solve for x
    x = 286,920,978.00/18,937.11
  6. Step 6: Final answer
    x = 15,151.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.