Home / 25,405.87-35,061.30-15,334.09

Finding the Fourth Proportional to 25,405.87, 35,061.30 and 15,334.09

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Solution

The fourth proportional to 25,405.87, 35,061.30 and 15,334.09 is: 21,161.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,405.87 : 35,061.30 = 15,334.09 : x
  2. Step 2: Convert to fraction form
    25,405.87/35,061.30 = 15,334.09/x
  3. Step 3: Cross multiply
    25,405.87x = 35,061.30 × 15,334.09
  4. Step 4: Simplify right side
    25,405.87x = 537,633,378.12
  5. Step 5: Solve for x
    x = 537,633,378.12/25,405.87
  6. Step 6: Final answer
    x = 21,161.78

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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.