Home / 18,382.90-25,391.53-15,164.38

Finding the Fourth Proportional to 18,382.90, 25,391.53 and 15,164.38

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Solution

The fourth proportional to 18,382.90, 25,391.53 and 15,164.38 is: 20,945.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,382.90 : 25,391.53 = 15,164.38 : x
  2. Step 2: Convert to fraction form
    18,382.90/25,391.53 = 15,164.38/x
  3. Step 3: Cross multiply
    18,382.90x = 25,391.53 × 15,164.38
  4. Step 4: Simplify right side
    18,382.90x = 385,046,810.80
  5. Step 5: Solve for x
    x = 385,046,810.80/18,382.90
  6. Step 6: Final answer
    x = 20,945.92

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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.