Home / 18,820.96-25,974-11,371.36

Finding the Fourth Proportional to 18,820.96, 25,974 and 11,371.36

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Solution

The fourth proportional to 18,820.96, 25,974 and 11,371.36 is: 15,693.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.96 : 25,974 = 11,371.36 : x
  2. Step 2: Convert to fraction form
    18,820.96/25,974 = 11,371.36/x
  3. Step 3: Cross multiply
    18,820.96x = 25,974 × 11,371.36
  4. Step 4: Simplify right side
    18,820.96x = 295,359,704.64
  5. Step 5: Solve for x
    x = 295,359,704.64/18,820.96
  6. Step 6: Final answer
    x = 15,693.13

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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.