Home / 13,245.57-18,278.61-7,277.10

Finding the Fourth Proportional to 13,245.57, 18,278.61 and 7,277.10

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Solution

The fourth proportional to 13,245.57, 18,278.61 and 7,277.10 is: 10,042.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.57 : 18,278.61 = 7,277.10 : x
  2. Step 2: Convert to fraction form
    13,245.57/18,278.61 = 7,277.10/x
  3. Step 3: Cross multiply
    13,245.57x = 18,278.61 × 7,277.10
  4. Step 4: Simplify right side
    13,245.57x = 133,015,272.83
  5. Step 5: Solve for x
    x = 133,015,272.83/13,245.57
  6. Step 6: Final answer
    x = 10,042.25

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Half scale
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Double scale
Find fourth proportional to 13,246.57, 18,279.99 and 7,278.10
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.