Home / 15,825.78-23,738.20-3,979.53

Finding the Fourth Proportional to 15,825.78, 23,738.20 and 3,979.53

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Solution

The fourth proportional to 15,825.78, 23,738.20 and 3,979.53 is: 5,969.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,825.78 : 23,738.20 = 3,979.53 : x
  2. Step 2: Convert to fraction form
    15,825.78/23,738.20 = 3,979.53/x
  3. Step 3: Cross multiply
    15,825.78x = 23,738.20 × 3,979.53
  4. Step 4: Simplify right side
    15,825.78x = 94,466,869.10
  5. Step 5: Solve for x
    x = 94,466,869.10/15,825.78
  6. Step 6: Final answer
    x = 5,969.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.