Home / 18,121.35-25,008.72-10,055.42

Finding the Fourth Proportional to 18,121.35, 25,008.72 and 10,055.42

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Solution

The fourth proportional to 18,121.35, 25,008.72 and 10,055.42 is: 13,877.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.35 : 25,008.72 = 10,055.42 : x
  2. Step 2: Convert to fraction form
    18,121.35/25,008.72 = 10,055.42/x
  3. Step 3: Cross multiply
    18,121.35x = 25,008.72 × 10,055.42
  4. Step 4: Simplify right side
    18,121.35x = 251,473,128.80
  5. Step 5: Solve for x
    x = 251,473,128.80/18,121.35
  6. Step 6: Final answer
    x = 13,877.18

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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.