Home / 28,439.10-39,238.02-18,367.97

Finding the Fourth Proportional to 28,439.10, 39,238.02 and 18,367.97

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Solution

The fourth proportional to 28,439.10, 39,238.02 and 18,367.97 is: 25,342.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,439.10 : 39,238.02 = 18,367.97 : x
  2. Step 2: Convert to fraction form
    28,439.10/39,238.02 = 18,367.97/x
  3. Step 3: Cross multiply
    28,439.10x = 39,238.02 × 18,367.97
  4. Step 4: Simplify right side
    28,439.10x = 720,722,578.03
  5. Step 5: Solve for x
    x = 720,722,578.03/28,439.10
  6. Step 6: Final answer
    x = 25,342.66

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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.