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Finding the Fourth Proportional to 12,789.19, 17,649.09 and 7,482.98

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Solution

The fourth proportional to 12,789.19, 17,649.09 and 7,482.98 is: 10,326.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.19 : 17,649.09 = 7,482.98 : x
  2. Step 2: Convert to fraction form
    12,789.19/17,649.09 = 7,482.98/x
  3. Step 3: Cross multiply
    12,789.19x = 17,649.09 × 7,482.98
  4. Step 4: Simplify right side
    12,789.19x = 132,067,831.61
  5. Step 5: Solve for x
    x = 132,067,831.61/12,789.19
  6. Step 6: Final answer
    x = 10,326.52

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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.