Home / 18,414.78-25,412.49-10,031.28

Finding the Fourth Proportional to 18,414.78, 25,412.49 and 10,031.28

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Solution

The fourth proportional to 18,414.78, 25,412.49 and 10,031.28 is: 13,843.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,414.78 : 25,412.49 = 10,031.28 : x
  2. Step 2: Convert to fraction form
    18,414.78/25,412.49 = 10,031.28/x
  3. Step 3: Cross multiply
    18,414.78x = 25,412.49 × 10,031.28
  4. Step 4: Simplify right side
    18,414.78x = 254,919,802.69
  5. Step 5: Solve for x
    x = 254,919,802.69/18,414.78
  6. Step 6: Final answer
    x = 13,843.22

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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.