Home / 13,245.64-18,278.90-7,277.18

Finding the Fourth Proportional to 13,245.64, 18,278.90 and 7,277.18

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Solution

The fourth proportional to 13,245.64, 18,278.90 and 7,277.18 is: 10,042.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.64 : 18,278.90 = 7,277.18 : x
  2. Step 2: Convert to fraction form
    13,245.64/18,278.90 = 7,277.18/x
  3. Step 3: Cross multiply
    13,245.64x = 18,278.90 × 7,277.18
  4. Step 4: Simplify right side
    13,245.64x = 133,018,845.50
  5. Step 5: Solve for x
    x = 133,018,845.50/13,245.64
  6. Step 6: Final answer
    x = 10,042.46

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Double scale
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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.