Home / 21,224.08-31,836.84-5,641.72

Finding the Fourth Proportional to 21,224.08, 31,836.84 and 5,641.72

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Solution

The fourth proportional to 21,224.08, 31,836.84 and 5,641.72 is: 8,462.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,224.08 : 31,836.84 = 5,641.72 : x
  2. Step 2: Convert to fraction form
    21,224.08/31,836.84 = 5,641.72/x
  3. Step 3: Cross multiply
    21,224.08x = 31,836.84 × 5,641.72
  4. Step 4: Simplify right side
    21,224.08x = 179,614,536.96
  5. Step 5: Solve for x
    x = 179,614,536.96/21,224.08
  6. Step 6: Final answer
    x = 8,462.77

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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.