Home / 18,478.18-25,532.49-13,691.26

Finding the Fourth Proportional to 18,478.18, 25,532.49 and 13,691.26

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Solution

The fourth proportional to 18,478.18, 25,532.49 and 13,691.26 is: 18,918.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,478.18 : 25,532.49 = 13,691.26 : x
  2. Step 2: Convert to fraction form
    18,478.18/25,532.49 = 13,691.26/x
  3. Step 3: Cross multiply
    18,478.18x = 25,532.49 × 13,691.26
  4. Step 4: Simplify right side
    18,478.18x = 349,571,959.04
  5. Step 5: Solve for x
    x = 349,571,959.04/18,478.18
  6. Step 6: Final answer
    x = 18,918.09

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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.