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Finding the Fourth Proportional to 12,799.51, 17,662.70 and 7,134.87

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Solution

The fourth proportional to 12,799.51, 17,662.70 and 7,134.87 is: 9,845.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,799.51 : 17,662.70 = 7,134.87 : x
  2. Step 2: Convert to fraction form
    12,799.51/17,662.70 = 7,134.87/x
  3. Step 3: Cross multiply
    12,799.51x = 17,662.70 × 7,134.87
  4. Step 4: Simplify right side
    12,799.51x = 126,021,068.35
  5. Step 5: Solve for x
    x = 126,021,068.35/12,799.51
  6. Step 6: Final answer
    x = 9,845.77

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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.