Home / 21,188.27-31,782.65-6,397.83

Finding the Fourth Proportional to 21,188.27, 31,782.65 and 6,397.83

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Solution

The fourth proportional to 21,188.27, 31,782.65 and 6,397.83 is: 9,596.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.27 : 31,782.65 = 6,397.83 : x
  2. Step 2: Convert to fraction form
    21,188.27/31,782.65 = 6,397.83/x
  3. Step 3: Cross multiply
    21,188.27x = 31,782.65 × 6,397.83
  4. Step 4: Simplify right side
    21,188.27x = 203,340,071.11
  5. Step 5: Solve for x
    x = 203,340,071.11/21,188.27
  6. Step 6: Final answer
    x = 9,596.82

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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.