Home / 21,184.76-31,777.96-6,393.68

Finding the Fourth Proportional to 21,184.76, 31,777.96 and 6,393.68

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Solution

The fourth proportional to 21,184.76, 31,777.96 and 6,393.68 is: 9,590.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.76 : 31,777.96 = 6,393.68 : x
  2. Step 2: Convert to fraction form
    21,184.76/31,777.96 = 6,393.68/x
  3. Step 3: Cross multiply
    21,184.76x = 31,777.96 × 6,393.68
  4. Step 4: Simplify right side
    21,184.76x = 203,178,107.29
  5. Step 5: Solve for x
    x = 203,178,107.29/21,184.76
  6. Step 6: Final answer
    x = 9,590.77

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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.