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Finding the Fourth Proportional to 13,799.70, 19,043.64 and 7,512.08

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Solution

The fourth proportional to 13,799.70, 19,043.64 and 7,512.08 is: 10,366.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,799.70 : 19,043.64 = 7,512.08 : x
  2. Step 2: Convert to fraction form
    13,799.70/19,043.64 = 7,512.08/x
  3. Step 3: Cross multiply
    13,799.70x = 19,043.64 × 7,512.08
  4. Step 4: Simplify right side
    13,799.70x = 143,057,251.95
  5. Step 5: Solve for x
    x = 143,057,251.95/13,799.70
  6. Step 6: Final answer
    x = 10,366.69

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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.