Home / 21,327.72-31,990.42-6,536.68

Finding the Fourth Proportional to 21,327.72, 31,990.42 and 6,536.68

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Solution

The fourth proportional to 21,327.72, 31,990.42 and 6,536.68 is: 9,804.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.72 : 31,990.42 = 6,536.68 : x
  2. Step 2: Convert to fraction form
    21,327.72/31,990.42 = 6,536.68/x
  3. Step 3: Cross multiply
    21,327.72x = 31,990.42 × 6,536.68
  4. Step 4: Simplify right side
    21,327.72x = 209,111,138.61
  5. Step 5: Solve for x
    x = 209,111,138.61/21,327.72
  6. Step 6: Final answer
    x = 9,804.66

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1.5x scale

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.