Home / 13,451.72-18,555.68-8,072.71

Finding the Fourth Proportional to 13,451.72, 18,555.68 and 8,072.71

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Solution

The fourth proportional to 13,451.72, 18,555.68 and 8,072.71 is: 11,135.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.72 : 18,555.68 = 8,072.71 : x
  2. Step 2: Convert to fraction form
    13,451.72/18,555.68 = 8,072.71/x
  3. Step 3: Cross multiply
    13,451.72x = 18,555.68 × 8,072.71
  4. Step 4: Simplify right side
    13,451.72x = 149,794,597.29
  5. Step 5: Solve for x
    x = 149,794,597.29/13,451.72
  6. Step 6: Final answer
    x = 11,135.72

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Half scale
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Double scale
Find fourth proportional to 13,452.72, 18,557.06 and 8,073.71
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.