Home / 13,909.91-19,195.68-8,247.42

Finding the Fourth Proportional to 13,909.91, 19,195.68 and 8,247.42

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Solution

The fourth proportional to 13,909.91, 19,195.68 and 8,247.42 is: 11,381.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.91 : 19,195.68 = 8,247.42 : x
  2. Step 2: Convert to fraction form
    13,909.91/19,195.68 = 8,247.42/x
  3. Step 3: Cross multiply
    13,909.91x = 19,195.68 × 8,247.42
  4. Step 4: Simplify right side
    13,909.91x = 158,314,835.15
  5. Step 5: Solve for x
    x = 158,314,835.15/13,909.91
  6. Step 6: Final answer
    x = 11,381.45

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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.