Home / 18,689.31-25,791.23-10,191.43

Finding the Fourth Proportional to 18,689.31, 25,791.23 and 10,191.43

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Solution

The fourth proportional to 18,689.31, 25,791.23 and 10,191.43 is: 14,064.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.31 : 25,791.23 = 10,191.43 : x
  2. Step 2: Convert to fraction form
    18,689.31/25,791.23 = 10,191.43/x
  3. Step 3: Cross multiply
    18,689.31x = 25,791.23 × 10,191.43
  4. Step 4: Simplify right side
    18,689.31x = 262,849,515.16
  5. Step 5: Solve for x
    x = 262,849,515.16/18,689.31
  6. Step 6: Final answer
    x = 14,064.16

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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.