Home / 28,238.72-38,971.20-16,304.24

Finding the Fourth Proportional to 28,238.72, 38,971.20 and 16,304.24

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Solution

The fourth proportional to 28,238.72, 38,971.20 and 16,304.24 is: 22,500.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,238.72 : 38,971.20 = 16,304.24 : x
  2. Step 2: Convert to fraction form
    28,238.72/38,971.20 = 16,304.24/x
  3. Step 3: Cross multiply
    28,238.72x = 38,971.20 × 16,304.24
  4. Step 4: Simplify right side
    28,238.72x = 635,395,797.89
  5. Step 5: Solve for x
    x = 635,395,797.89/28,238.72
  6. Step 6: Final answer
    x = 22,500.87

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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.