Home / 13,245.41-18,278.79-7,277.20

Finding the Fourth Proportional to 13,245.41, 18,278.79 and 7,277.20

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Solution

The fourth proportional to 13,245.41, 18,278.79 and 7,277.20 is: 10,042.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.41 : 18,278.79 = 7,277.20 : x
  2. Step 2: Convert to fraction form
    13,245.41/18,278.79 = 7,277.20/x
  3. Step 3: Cross multiply
    13,245.41x = 18,278.79 × 7,277.20
  4. Step 4: Simplify right side
    13,245.41x = 133,018,456.28
  5. Step 5: Solve for x
    x = 133,018,456.28/13,245.41
  6. Step 6: Final answer
    x = 10,042.61

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Half scale
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Double scale
Find fourth proportional to 13,246.41, 18,280.17 and 7,278.20
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.