Home / 28,881.97-39,876.71-18,697.57

Finding the Fourth Proportional to 28,881.97, 39,876.71 and 18,697.57

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Solution

The fourth proportional to 28,881.97, 39,876.71 and 18,697.57 is: 25,815.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,881.97 : 39,876.71 = 18,697.57 : x
  2. Step 2: Convert to fraction form
    28,881.97/39,876.71 = 18,697.57/x
  3. Step 3: Cross multiply
    28,881.97x = 39,876.71 × 18,697.57
  4. Step 4: Simplify right side
    28,881.97x = 745,597,383.42
  5. Step 5: Solve for x
    x = 745,597,383.42/28,881.97
  6. Step 6: Final answer
    x = 25,815.33

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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.