Home / 13,919.76-19,214.08-8,330.72

Finding the Fourth Proportional to 13,919.76, 19,214.08 and 8,330.72

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Solution

The fourth proportional to 13,919.76, 19,214.08 and 8,330.72 is: 11,499.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.76 : 19,214.08 = 8,330.72 : x
  2. Step 2: Convert to fraction form
    13,919.76/19,214.08 = 8,330.72/x
  3. Step 3: Cross multiply
    13,919.76x = 19,214.08 × 8,330.72
  4. Step 4: Simplify right side
    13,919.76x = 160,067,120.54
  5. Step 5: Solve for x
    x = 160,067,120.54/13,919.76
  6. Step 6: Final answer
    x = 11,499.27

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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.