Home / 16,881.32-25,319.10-5,191.40

Finding the Fourth Proportional to 16,881.32, 25,319.10 and 5,191.40

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Solution

The fourth proportional to 16,881.32, 25,319.10 and 5,191.40 is: 7,786.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,881.32 : 25,319.10 = 5,191.40 : x
  2. Step 2: Convert to fraction form
    16,881.32/25,319.10 = 5,191.40/x
  3. Step 3: Cross multiply
    16,881.32x = 25,319.10 × 5,191.40
  4. Step 4: Simplify right side
    16,881.32x = 131,441,575.74
  5. Step 5: Solve for x
    x = 131,441,575.74/16,881.32
  6. Step 6: Final answer
    x = 7,786.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.