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Finding the Fourth Proportional to 14,419.52, 19,899.86 and 8,449.01

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Solution

The fourth proportional to 14,419.52, 19,899.86 and 8,449.01 is: 11,660.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,419.52 : 19,899.86 = 8,449.01 : x
  2. Step 2: Convert to fraction form
    14,419.52/19,899.86 = 8,449.01/x
  3. Step 3: Cross multiply
    14,419.52x = 19,899.86 × 8,449.01
  4. Step 4: Simplify right side
    14,419.52x = 168,133,974.39
  5. Step 5: Solve for x
    x = 168,133,974.39/14,419.52
  6. Step 6: Final answer
    x = 11,660.17

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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.