Home / 28,335.33-39,105.91-15,589.57

Finding the Fourth Proportional to 28,335.33, 39,105.91 and 15,589.57

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Solution

The fourth proportional to 28,335.33, 39,105.91 and 15,589.57 is: 21,515.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,335.33 : 39,105.91 = 15,589.57 : x
  2. Step 2: Convert to fraction form
    28,335.33/39,105.91 = 15,589.57/x
  3. Step 3: Cross multiply
    28,335.33x = 39,105.91 × 15,589.57
  4. Step 4: Simplify right side
    28,335.33x = 609,644,321.36
  5. Step 5: Solve for x
    x = 609,644,321.36/28,335.33
  6. Step 6: Final answer
    x = 21,515.34

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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.