Home / 13,691.51-18,892.68-7,722.83

Finding the Fourth Proportional to 13,691.51, 18,892.68 and 7,722.83

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Solution

The fourth proportional to 13,691.51, 18,892.68 and 7,722.83 is: 10,656.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.51 : 18,892.68 = 7,722.83 : x
  2. Step 2: Convert to fraction form
    13,691.51/18,892.68 = 7,722.83/x
  3. Step 3: Cross multiply
    13,691.51x = 18,892.68 × 7,722.83
  4. Step 4: Simplify right side
    13,691.51x = 145,904,861.42
  5. Step 5: Solve for x
    x = 145,904,861.42/13,691.51
  6. Step 6: Final answer
    x = 10,656.59

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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.