Home / 28,708.29-39,619.22-15,961.57

Finding the Fourth Proportional to 28,708.29, 39,619.22 and 15,961.57

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Solution

The fourth proportional to 28,708.29, 39,619.22 and 15,961.57 is: 22,027.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,708.29 : 39,619.22 = 15,961.57 : x
  2. Step 2: Convert to fraction form
    28,708.29/39,619.22 = 15,961.57/x
  3. Step 3: Cross multiply
    28,708.29x = 39,619.22 × 15,961.57
  4. Step 4: Simplify right side
    28,708.29x = 632,384,913.47
  5. Step 5: Solve for x
    x = 632,384,913.47/28,708.29
  6. Step 6: Final answer
    x = 22,027.96

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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.