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Finding the Fourth Proportional to 13,767.59, 18,999.72 and 7,799.13

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Solution

The fourth proportional to 13,767.59, 18,999.72 and 7,799.13 is: 10,763.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,767.59 : 18,999.72 = 7,799.13 : x
  2. Step 2: Convert to fraction form
    13,767.59/18,999.72 = 7,799.13/x
  3. Step 3: Cross multiply
    13,767.59x = 18,999.72 × 7,799.13
  4. Step 4: Simplify right side
    13,767.59x = 148,181,286.24
  5. Step 5: Solve for x
    x = 148,181,286.24/13,767.59
  6. Step 6: Final answer
    x = 10,763.05

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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.