Home / 18,261.81-27,390.57-5,115.24

Finding the Fourth Proportional to 18,261.81, 27,390.57 and 5,115.24

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Solution

The fourth proportional to 18,261.81, 27,390.57 and 5,115.24 is: 7,672.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,261.81 : 27,390.57 = 5,115.24 : x
  2. Step 2: Convert to fraction form
    18,261.81/27,390.57 = 5,115.24/x
  3. Step 3: Cross multiply
    18,261.81x = 27,390.57 × 5,115.24
  4. Step 4: Simplify right side
    18,261.81x = 140,109,339.29
  5. Step 5: Solve for x
    x = 140,109,339.29/18,261.81
  6. Step 6: Final answer
    x = 7,672.26

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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.