Home / 18,517.71-25,555.05-10,134.21

Finding the Fourth Proportional to 18,517.71, 25,555.05 and 10,134.21

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Solution

The fourth proportional to 18,517.71, 25,555.05 and 10,134.21 is: 13,985.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517.71 : 25,555.05 = 10,134.21 : x
  2. Step 2: Convert to fraction form
    18,517.71/25,555.05 = 10,134.21/x
  3. Step 3: Cross multiply
    18,517.71x = 25,555.05 × 10,134.21
  4. Step 4: Simplify right side
    18,517.71x = 258,980,243.26
  5. Step 5: Solve for x
    x = 258,980,243.26/18,517.71
  6. Step 6: Final answer
    x = 13,985.54

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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.