Home / 21,317.28-31,977.84-5,734.56

Finding the Fourth Proportional to 21,317.28, 31,977.84 and 5,734.56

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Solution

The fourth proportional to 21,317.28, 31,977.84 and 5,734.56 is: 8,602.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.28 : 31,977.84 = 5,734.56 : x
  2. Step 2: Convert to fraction form
    21,317.28/31,977.84 = 5,734.56/x
  3. Step 3: Cross multiply
    21,317.28x = 31,977.84 × 5,734.56
  4. Step 4: Simplify right side
    21,317.28x = 183,378,842.15
  5. Step 5: Solve for x
    x = 183,378,842.15/21,317.28
  6. Step 6: Final answer
    x = 8,602.36

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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.