Home / 25,729.20-35,510.40-15,121.44

Finding the Fourth Proportional to 25,729.20, 35,510.40 and 15,121.44

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Solution

The fourth proportional to 25,729.20, 35,510.40 and 15,121.44 is: 20,870.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,729.20 : 35,510.40 = 15,121.44 : x
  2. Step 2: Convert to fraction form
    25,729.20/35,510.40 = 15,121.44/x
  3. Step 3: Cross multiply
    25,729.20x = 35,510.40 × 15,121.44
  4. Step 4: Simplify right side
    25,729.20x = 536,968,382.98
  5. Step 5: Solve for x
    x = 536,968,382.98/25,729.20
  6. Step 6: Final answer
    x = 20,870.00

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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.