Home / 25,728.59-35,506.76-15,121.64

Finding the Fourth Proportional to 25,728.59, 35,506.76 and 15,121.64

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Solution

The fourth proportional to 25,728.59, 35,506.76 and 15,121.64 is: 20,868.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,728.59 : 35,506.76 = 15,121.64 : x
  2. Step 2: Convert to fraction form
    25,728.59/35,506.76 = 15,121.64/x
  3. Step 3: Cross multiply
    25,728.59x = 35,506.76 × 15,121.64
  4. Step 4: Simplify right side
    25,728.59x = 536,920,189.14
  5. Step 5: Solve for x
    x = 536,920,189.14/25,728.59
  6. Step 6: Final answer
    x = 20,868.62

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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.