Home / 21,844.75-30,115.20-18,474.07

Finding the Fourth Proportional to 21,844.75, 30,115.20 and 18,474.07

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Solution

The fourth proportional to 21,844.75, 30,115.20 and 18,474.07 is: 25,468.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,844.75 : 30,115.20 = 18,474.07 : x
  2. Step 2: Convert to fraction form
    21,844.75/30,115.20 = 18,474.07/x
  3. Step 3: Cross multiply
    21,844.75x = 30,115.20 × 18,474.07
  4. Step 4: Simplify right side
    21,844.75x = 556,350,312.86
  5. Step 5: Solve for x
    x = 556,350,312.86/21,844.75
  6. Step 6: Final answer
    x = 25,468.38

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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.