Home / 11,120.49-15,348.42-7,146.63

Finding the Fourth Proportional to 11,120.49, 15,348.42 and 7,146.63

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Solution

The fourth proportional to 11,120.49, 15,348.42 and 7,146.63 is: 9,863.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.49 : 15,348.42 = 7,146.63 : x
  2. Step 2: Convert to fraction form
    11,120.49/15,348.42 = 7,146.63/x
  3. Step 3: Cross multiply
    11,120.49x = 15,348.42 × 7,146.63
  4. Step 4: Simplify right side
    11,120.49x = 109,689,478.82
  5. Step 5: Solve for x
    x = 109,689,478.82/11,120.49
  6. Step 6: Final answer
    x = 9,863.73

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Half scale
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Double scale
Find fourth proportional to 11,121.49, 15,349.80 and 7,147.63
Similar ratio
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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.