Home / 18,121.79-25,008.28-10,055.61

Finding the Fourth Proportional to 18,121.79, 25,008.28 and 10,055.61

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Solution

The fourth proportional to 18,121.79, 25,008.28 and 10,055.61 is: 13,876.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.79 : 25,008.28 = 10,055.61 : x
  2. Step 2: Convert to fraction form
    18,121.79/25,008.28 = 10,055.61/x
  3. Step 3: Cross multiply
    18,121.79x = 25,008.28 × 10,055.61
  4. Step 4: Simplify right side
    18,121.79x = 251,473,485.31
  5. Step 5: Solve for x
    x = 251,473,485.31/18,121.79
  6. Step 6: Final answer
    x = 13,876.85

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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.