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Finding the Fourth Proportional to 14,477.82, 19,979.32 and 8,512.90

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Solution

The fourth proportional to 14,477.82, 19,979.32 and 8,512.90 is: 11,747.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,477.82 : 19,979.32 = 8,512.90 : x
  2. Step 2: Convert to fraction form
    14,477.82/19,979.32 = 8,512.90/x
  3. Step 3: Cross multiply
    14,477.82x = 19,979.32 × 8,512.90
  4. Step 4: Simplify right side
    14,477.82x = 170,081,953.23
  5. Step 5: Solve for x
    x = 170,081,953.23/14,477.82
  6. Step 6: Final answer
    x = 11,747.76

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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.