Home / 20,253.78-30,376.53-5,459.31

Finding the Fourth Proportional to 20,253.78, 30,376.53 and 5,459.31

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Solution

The fourth proportional to 20,253.78, 30,376.53 and 5,459.31 is: 8,187.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,253.78 : 30,376.53 = 5,459.31 : x
  2. Step 2: Convert to fraction form
    20,253.78/30,376.53 = 5,459.31/x
  3. Step 3: Cross multiply
    20,253.78x = 30,376.53 × 5,459.31
  4. Step 4: Simplify right side
    20,253.78x = 165,834,893.99
  5. Step 5: Solve for x
    x = 165,834,893.99/20,253.78
  6. Step 6: Final answer
    x = 8,187.85

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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.