Home / 21,382.11-32,055.84-8,911.47

Finding the Fourth Proportional to 21,382.11, 32,055.84 and 8,911.47

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Solution

The fourth proportional to 21,382.11, 32,055.84 and 8,911.47 is: 13,359.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,382.11 : 32,055.84 = 8,911.47 : x
  2. Step 2: Convert to fraction form
    21,382.11/32,055.84 = 8,911.47/x
  3. Step 3: Cross multiply
    21,382.11x = 32,055.84 × 8,911.47
  4. Step 4: Simplify right side
    21,382.11x = 285,664,656.48
  5. Step 5: Solve for x
    x = 285,664,656.48/21,382.11
  6. Step 6: Final answer
    x = 13,359.98

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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.