Home / 18,887.31-26,066.10-10,391.12

Finding the Fourth Proportional to 18,887.31, 26,066.10 and 10,391.12

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Solution

The fourth proportional to 18,887.31, 26,066.10 and 10,391.12 is: 14,340.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.31 : 26,066.10 = 10,391.12 : x
  2. Step 2: Convert to fraction form
    18,887.31/26,066.10 = 10,391.12/x
  3. Step 3: Cross multiply
    18,887.31x = 26,066.10 × 10,391.12
  4. Step 4: Simplify right side
    18,887.31x = 270,855,979.42
  5. Step 5: Solve for x
    x = 270,855,979.42/18,887.31
  6. Step 6: Final answer
    x = 14,340.63

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1.5x scale

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.