Home / 10,876.59-15,015.92-7,161.39

Finding the Fourth Proportional to 10,876.59, 15,015.92 and 7,161.39

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Solution

The fourth proportional to 10,876.59, 15,015.92 and 7,161.39 is: 9,886.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,876.59 : 15,015.92 = 7,161.39 : x
  2. Step 2: Convert to fraction form
    10,876.59/15,015.92 = 7,161.39/x
  3. Step 3: Cross multiply
    10,876.59x = 15,015.92 × 7,161.39
  4. Step 4: Simplify right side
    10,876.59x = 107,534,823.52
  5. Step 5: Solve for x
    x = 107,534,823.52/10,876.59
  6. Step 6: Final answer
    x = 9,886.81

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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.