Home / 18,261.89-25,145.20-15,567.06

Finding the Fourth Proportional to 18,261.89, 25,145.20 and 15,567.06

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Solution

The fourth proportional to 18,261.89, 25,145.20 and 15,567.06 is: 21,434.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,261.89 : 25,145.20 = 15,567.06 : x
  2. Step 2: Convert to fraction form
    18,261.89/25,145.20 = 15,567.06/x
  3. Step 3: Cross multiply
    18,261.89x = 25,145.20 × 15,567.06
  4. Step 4: Simplify right side
    18,261.89x = 391,436,863.30
  5. Step 5: Solve for x
    x = 391,436,863.30/18,261.89
  6. Step 6: Final answer
    x = 21,434.63

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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.