Home / 25,202.70-34,780.80-15,131.94

Finding the Fourth Proportional to 25,202.70, 34,780.80 and 15,131.94

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Solution

The fourth proportional to 25,202.70, 34,780.80 and 15,131.94 is: 20,882.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,202.70 : 34,780.80 = 15,131.94 : x
  2. Step 2: Convert to fraction form
    25,202.70/34,780.80 = 15,131.94/x
  3. Step 3: Cross multiply
    25,202.70x = 34,780.80 × 15,131.94
  4. Step 4: Simplify right side
    25,202.70x = 526,300,978.75
  5. Step 5: Solve for x
    x = 526,300,978.75/25,202.70
  6. Step 6: Final answer
    x = 20,882.72

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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.