Home / 10,900.76-15,042.65-6,121.22

Finding the Fourth Proportional to 10,900.76, 15,042.65 and 6,121.22

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Solution

The fourth proportional to 10,900.76, 15,042.65 and 6,121.22 is: 8,447.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.76 : 15,042.65 = 6,121.22 : x
  2. Step 2: Convert to fraction form
    10,900.76/15,042.65 = 6,121.22/x
  3. Step 3: Cross multiply
    10,900.76x = 15,042.65 × 6,121.22
  4. Step 4: Simplify right side
    10,900.76x = 92,079,264.21
  5. Step 5: Solve for x
    x = 92,079,264.21/10,900.76
  6. Step 6: Final answer
    x = 8,447.05

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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.