Home / 28,171.92-38,868.48-18,742.08

Finding the Fourth Proportional to 28,171.92, 38,868.48 and 18,742.08

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Solution

The fourth proportional to 28,171.92, 38,868.48 and 18,742.08 is: 25,858.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,171.92 : 38,868.48 = 18,742.08 : x
  2. Step 2: Convert to fraction form
    28,171.92/38,868.48 = 18,742.08/x
  3. Step 3: Cross multiply
    28,171.92x = 38,868.48 × 18,742.08
  4. Step 4: Simplify right side
    28,171.92x = 728,476,161.64
  5. Step 5: Solve for x
    x = 728,476,161.64/28,171.92
  6. Step 6: Final answer
    x = 25,858.24

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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.