Home / 17,261.78-25,886.99-5,415.53

Finding the Fourth Proportional to 17,261.78, 25,886.99 and 5,415.53

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Solution

The fourth proportional to 17,261.78, 25,886.99 and 5,415.53 is: 8,121.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,261.78 : 25,886.99 = 5,415.53 : x
  2. Step 2: Convert to fraction form
    17,261.78/25,886.99 = 5,415.53/x
  3. Step 3: Cross multiply
    17,261.78x = 25,886.99 × 5,415.53
  4. Step 4: Simplify right side
    17,261.78x = 140,191,655.06
  5. Step 5: Solve for x
    x = 140,191,655.06/17,261.78
  6. Step 6: Final answer
    x = 8,121.51

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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.