Home / 18,371.23-25,352.25-9,987.73

Finding the Fourth Proportional to 18,371.23, 25,352.25 and 9,987.73

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Solution

The fourth proportional to 18,371.23, 25,352.25 and 9,987.73 is: 13,783.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,371.23 : 25,352.25 = 9,987.73 : x
  2. Step 2: Convert to fraction form
    18,371.23/25,352.25 = 9,987.73/x
  3. Step 3: Cross multiply
    18,371.23x = 25,352.25 × 9,987.73
  4. Step 4: Simplify right side
    18,371.23x = 253,211,427.89
  5. Step 5: Solve for x
    x = 253,211,427.89/18,371.23
  6. Step 6: Final answer
    x = 13,783.04

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Half scale
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Double scale
Find fourth proportional to 18,372.23, 25,353.63 and 9,988.73
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.