Home / 56,820.64-85,213.68-19,876

Finding the Fourth Proportional to 56,820.64, 85,213.68 and 19,876

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Solution

The fourth proportional to 56,820.64, 85,213.68 and 19,876 is: 29,807.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,820.64 : 85,213.68 = 19,876 : x
  2. Step 2: Convert to fraction form
    56,820.64/85,213.68 = 19,876/x
  3. Step 3: Cross multiply
    56,820.64x = 85,213.68 × 19,876
  4. Step 4: Simplify right side
    56,820.64x = 1,693,707,103.68
  5. Step 5: Solve for x
    x = 1,693,707,103.68/56,820.64
  6. Step 6: Final answer
    x = 29,807.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.