Home / 10,069.92-15,109.20-5,680.80

Finding the Fourth Proportional to 10,069.92, 15,109.20 and 5,680.80

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Solution

The fourth proportional to 10,069.92, 15,109.20 and 5,680.80 is: 8,523.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,069.92 : 15,109.20 = 5,680.80 : x
  2. Step 2: Convert to fraction form
    10,069.92/15,109.20 = 5,680.80/x
  3. Step 3: Cross multiply
    10,069.92x = 15,109.20 × 5,680.80
  4. Step 4: Simplify right side
    10,069.92x = 85,832,343.36
  5. Step 5: Solve for x
    x = 85,832,343.36/10,069.92
  6. Step 6: Final answer
    x = 8,523.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.