Home / 21,378.24-32,066.56-5,583.36

Finding the Fourth Proportional to 21,378.24, 32,066.56 and 5,583.36

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Solution

The fourth proportional to 21,378.24, 32,066.56 and 5,583.36 is: 8,374.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,378.24 : 32,066.56 = 5,583.36 : x
  2. Step 2: Convert to fraction form
    21,378.24/32,066.56 = 5,583.36/x
  3. Step 3: Cross multiply
    21,378.24x = 32,066.56 × 5,583.36
  4. Step 4: Simplify right side
    21,378.24x = 179,039,148.44
  5. Step 5: Solve for x
    x = 179,039,148.44/21,378.24
  6. Step 6: Final answer
    x = 8,374.83

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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.