Home / 18,801.18-25,972.65-15,019.38

Finding the Fourth Proportional to 18,801.18, 25,972.65 and 15,019.38

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Solution

The fourth proportional to 18,801.18, 25,972.65 and 15,019.38 is: 20,748.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.18 : 25,972.65 = 15,019.38 : x
  2. Step 2: Convert to fraction form
    18,801.18/25,972.65 = 15,019.38/x
  3. Step 3: Cross multiply
    18,801.18x = 25,972.65 × 15,019.38
  4. Step 4: Simplify right side
    18,801.18x = 390,093,099.96
  5. Step 5: Solve for x
    x = 390,093,099.96/18,801.18
  6. Step 6: Final answer
    x = 20,748.33

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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.