Home / 21,182.47-31,773.92-6,391.51

Finding the Fourth Proportional to 21,182.47, 31,773.92 and 6,391.51

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Solution

The fourth proportional to 21,182.47, 31,773.92 and 6,391.51 is: 9,587.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,182.47 : 31,773.92 = 6,391.51 : x
  2. Step 2: Convert to fraction form
    21,182.47/31,773.92 = 6,391.51/x
  3. Step 3: Cross multiply
    21,182.47x = 31,773.92 × 6,391.51
  4. Step 4: Simplify right side
    21,182.47x = 203,083,216.03
  5. Step 5: Solve for x
    x = 203,083,216.03/21,182.47
  6. Step 6: Final answer
    x = 9,587.33

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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.