Home / 25,780.50-35,571.69-15,171.30

Finding the Fourth Proportional to 25,780.50, 35,571.69 and 15,171.30

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Solution

The fourth proportional to 25,780.50, 35,571.69 and 15,171.30 is: 20,933.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,780.50 : 35,571.69 = 15,171.30 : x
  2. Step 2: Convert to fraction form
    25,780.50/35,571.69 = 15,171.30/x
  3. Step 3: Cross multiply
    25,780.50x = 35,571.69 × 15,171.30
  4. Step 4: Simplify right side
    25,780.50x = 539,668,780.50
  5. Step 5: Solve for x
    x = 539,668,780.50/25,780.50
  6. Step 6: Final answer
    x = 20,933.22

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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.