Home / 18,218.94-25,142.76-10,665.96

Finding the Fourth Proportional to 18,218.94, 25,142.76 and 10,665.96

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Solution

The fourth proportional to 18,218.94, 25,142.76 and 10,665.96 is: 14,719.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.94 : 25,142.76 = 10,665.96 : x
  2. Step 2: Convert to fraction form
    18,218.94/25,142.76 = 10,665.96/x
  3. Step 3: Cross multiply
    18,218.94x = 25,142.76 × 10,665.96
  4. Step 4: Simplify right side
    18,218.94x = 268,171,672.45
  5. Step 5: Solve for x
    x = 268,171,672.45/18,218.94
  6. Step 6: Final answer
    x = 14,719.39

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Half scale
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Double scale
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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.