Home / 28,159.75-38,819.05-21,433.66

Finding the Fourth Proportional to 28,159.75, 38,819.05 and 21,433.66

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Solution

The fourth proportional to 28,159.75, 38,819.05 and 21,433.66 is: 29,546.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,159.75 : 38,819.05 = 21,433.66 : x
  2. Step 2: Convert to fraction form
    28,159.75/38,819.05 = 21,433.66/x
  3. Step 3: Cross multiply
    28,159.75x = 38,819.05 × 21,433.66
  4. Step 4: Simplify right side
    28,159.75x = 832,034,386.95
  5. Step 5: Solve for x
    x = 832,034,386.95/28,159.75
  6. Step 6: Final answer
    x = 29,546.94

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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.