Home / 10,921.14-15,071.49-6,672.90

Finding the Fourth Proportional to 10,921.14, 15,071.49 and 6,672.90

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Solution

The fourth proportional to 10,921.14, 15,071.49 and 6,672.90 is: 9,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.14 : 15,071.49 = 6,672.90 : x
  2. Step 2: Convert to fraction form
    10,921.14/15,071.49 = 6,672.90/x
  3. Step 3: Cross multiply
    10,921.14x = 15,071.49 × 6,672.90
  4. Step 4: Simplify right side
    10,921.14x = 100,570,545.62
  5. Step 5: Solve for x
    x = 100,570,545.62/10,921.14
  6. Step 6: Final answer
    x = 9,208.80

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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.