Home / 13,245.89-18,279.66-7,277.71

Finding the Fourth Proportional to 13,245.89, 18,279.66 and 7,277.71

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Solution

The fourth proportional to 13,245.89, 18,279.66 and 7,277.71 is: 10,043.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.89 : 18,279.66 = 7,277.71 : x
  2. Step 2: Convert to fraction form
    13,245.89/18,279.66 = 7,277.71/x
  3. Step 3: Cross multiply
    13,245.89x = 18,279.66 × 7,277.71
  4. Step 4: Simplify right side
    13,245.89x = 133,034,064.38
  5. Step 5: Solve for x
    x = 133,034,064.38/13,245.89
  6. Step 6: Final answer
    x = 10,043.42

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Half scale
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Double scale
Find fourth proportional to 13,246.89, 18,281.04 and 7,278.71
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.