Home / 21,118.86-31,672.76-6,323.81

Finding the Fourth Proportional to 21,118.86, 31,672.76 and 6,323.81

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Solution

The fourth proportional to 21,118.86, 31,672.76 and 6,323.81 is: 9,484.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,118.86 : 31,672.76 = 6,323.81 : x
  2. Step 2: Convert to fraction form
    21,118.86/31,672.76 = 6,323.81/x
  3. Step 3: Cross multiply
    21,118.86x = 31,672.76 × 6,323.81
  4. Step 4: Simplify right side
    21,118.86x = 200,292,326.43
  5. Step 5: Solve for x
    x = 200,292,326.43/21,118.86
  6. Step 6: Final answer
    x = 9,484.05

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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.