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Finding the Fourth Proportional to 14,107.56, 19,468.35 and 8,139.12

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Solution

The fourth proportional to 14,107.56, 19,468.35 and 8,139.12 is: 11,231.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,107.56 : 19,468.35 = 8,139.12 : x
  2. Step 2: Convert to fraction form
    14,107.56/19,468.35 = 8,139.12/x
  3. Step 3: Cross multiply
    14,107.56x = 19,468.35 × 8,139.12
  4. Step 4: Simplify right side
    14,107.56x = 158,455,236.85
  5. Step 5: Solve for x
    x = 158,455,236.85/14,107.56
  6. Step 6: Final answer
    x = 11,231.94

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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.