Home / 10,920.88-15,091.26-8,930.68

Finding the Fourth Proportional to 10,920.88, 15,091.26 and 8,930.68

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Solution

The fourth proportional to 10,920.88, 15,091.26 and 8,930.68 is: 12,341.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.88 : 15,091.26 = 8,930.68 : x
  2. Step 2: Convert to fraction form
    10,920.88/15,091.26 = 8,930.68/x
  3. Step 3: Cross multiply
    10,920.88x = 15,091.26 × 8,930.68
  4. Step 4: Simplify right side
    10,920.88x = 134,775,213.86
  5. Step 5: Solve for x
    x = 134,775,213.86/10,920.88
  6. Step 6: Final answer
    x = 12,341.06

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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.