Home / 18,440.11-25,445.91-11,968.21

Finding the Fourth Proportional to 18,440.11, 25,445.91 and 11,968.21

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Solution

The fourth proportional to 18,440.11, 25,445.91 and 11,968.21 is: 16,515.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,440.11 : 25,445.91 = 11,968.21 : x
  2. Step 2: Convert to fraction form
    18,440.11/25,445.91 = 11,968.21/x
  3. Step 3: Cross multiply
    18,440.11x = 25,445.91 × 11,968.21
  4. Step 4: Simplify right side
    18,440.11x = 304,541,994.52
  5. Step 5: Solve for x
    x = 304,541,994.52/18,440.11
  6. Step 6: Final answer
    x = 16,515.19

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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.