Home / 10,990.26-15,172.74-8,012.70

Finding the Fourth Proportional to 10,990.26, 15,172.74 and 8,012.70

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Solution

The fourth proportional to 10,990.26, 15,172.74 and 8,012.70 is: 11,062.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.26 : 15,172.74 = 8,012.70 : x
  2. Step 2: Convert to fraction form
    10,990.26/15,172.74 = 8,012.70/x
  3. Step 3: Cross multiply
    10,990.26x = 15,172.74 × 8,012.70
  4. Step 4: Simplify right side
    10,990.26x = 121,574,613.80
  5. Step 5: Solve for x
    x = 121,574,613.80/10,990.26
  6. Step 6: Final answer
    x = 11,062.03

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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.