Home / 13,931.72-19,229.46-8,623.56

Finding the Fourth Proportional to 13,931.72, 19,229.46 and 8,623.56

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Solution

The fourth proportional to 13,931.72, 19,229.46 and 8,623.56 is: 11,902.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.72 : 19,229.46 = 8,623.56 : x
  2. Step 2: Convert to fraction form
    13,931.72/19,229.46 = 8,623.56/x
  3. Step 3: Cross multiply
    13,931.72x = 19,229.46 × 8,623.56
  4. Step 4: Simplify right side
    13,931.72x = 165,826,402.08
  5. Step 5: Solve for x
    x = 165,826,402.08/13,931.72
  6. Step 6: Final answer
    x = 11,902.79

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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.