Home / 21,305.76-31,958.63-5,723.39

Finding the Fourth Proportional to 21,305.76, 31,958.63 and 5,723.39

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Solution

The fourth proportional to 21,305.76, 31,958.63 and 5,723.39 is: 8,585.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.76 : 31,958.63 = 5,723.39 : x
  2. Step 2: Convert to fraction form
    21,305.76/31,958.63 = 5,723.39/x
  3. Step 3: Cross multiply
    21,305.76x = 31,958.63 × 5,723.39
  4. Step 4: Simplify right side
    21,305.76x = 182,911,514.95
  5. Step 5: Solve for x
    x = 182,911,514.95/21,305.76
  6. Step 6: Final answer
    x = 8,585.07

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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.