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Finding the Fourth Proportional to 12,809.80, 19,214.70 and 10,695.70

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Solution

The fourth proportional to 12,809.80, 19,214.70 and 10,695.70 is: 16,043.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.80 : 19,214.70 = 10,695.70 : x
  2. Step 2: Convert to fraction form
    12,809.80/19,214.70 = 10,695.70/x
  3. Step 3: Cross multiply
    12,809.80x = 19,214.70 × 10,695.70
  4. Step 4: Simplify right side
    12,809.80x = 205,514,666.79
  5. Step 5: Solve for x
    x = 205,514,666.79/12,809.80
  6. Step 6: Final answer
    x = 16,043.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.