Home / 10,920.39-15,070.46-6,672.15

Finding the Fourth Proportional to 10,920.39, 15,070.46 and 6,672.15

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Solution

The fourth proportional to 10,920.39, 15,070.46 and 6,672.15 is: 9,207.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.39 : 15,070.46 = 6,672.15 : x
  2. Step 2: Convert to fraction form
    10,920.39/15,070.46 = 6,672.15/x
  3. Step 3: Cross multiply
    10,920.39x = 15,070.46 × 6,672.15
  4. Step 4: Simplify right side
    10,920.39x = 100,552,336.33
  5. Step 5: Solve for x
    x = 100,552,336.33/10,920.39
  6. Step 6: Final answer
    x = 9,207.76

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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.