Home / 28,708.18-39,619.07-15,961.46

Finding the Fourth Proportional to 28,708.18, 39,619.07 and 15,961.46

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Solution

The fourth proportional to 28,708.18, 39,619.07 and 15,961.46 is: 22,027.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,708.18 : 39,619.07 = 15,961.46 : x
  2. Step 2: Convert to fraction form
    28,708.18/39,619.07 = 15,961.46/x
  3. Step 3: Cross multiply
    28,708.18x = 39,619.07 × 15,961.46
  4. Step 4: Simplify right side
    28,708.18x = 632,378,220.28
  5. Step 5: Solve for x
    x = 632,378,220.28/28,708.18
  6. Step 6: Final answer
    x = 22,027.81

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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.