Home / 13,922.38-19,216.59-8,614.20

Finding the Fourth Proportional to 13,922.38, 19,216.59 and 8,614.20

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Solution

The fourth proportional to 13,922.38, 19,216.59 and 8,614.20 is: 11,889.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,922.38 : 19,216.59 = 8,614.20 : x
  2. Step 2: Convert to fraction form
    13,922.38/19,216.59 = 8,614.20/x
  3. Step 3: Cross multiply
    13,922.38x = 19,216.59 × 8,614.20
  4. Step 4: Simplify right side
    13,922.38x = 165,535,529.70
  5. Step 5: Solve for x
    x = 165,535,529.70/13,922.38
  6. Step 6: Final answer
    x = 11,889.89

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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.