Home / 25,113.24-34,656.56-15,687.28

Finding the Fourth Proportional to 25,113.24, 34,656.56 and 15,687.28

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Solution

The fourth proportional to 25,113.24, 34,656.56 and 15,687.28 is: 21,648.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,113.24 : 34,656.56 = 15,687.28 : x
  2. Step 2: Convert to fraction form
    25,113.24/34,656.56 = 15,687.28/x
  3. Step 3: Cross multiply
    25,113.24x = 34,656.56 × 15,687.28
  4. Step 4: Simplify right side
    25,113.24x = 543,667,160.56
  5. Step 5: Solve for x
    x = 543,667,160.56/25,113.24
  6. Step 6: Final answer
    x = 21,648.63

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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.