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Finding the Fourth Proportional to 21,804.39, 32,538.92 and 21,679.65

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Solution

The fourth proportional to 21,804.39, 32,538.92 and 21,679.65 is: 32,352.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,804.39 : 32,538.92 = 21,679.65 : x
  2. Step 2: Convert to fraction form
    21,804.39/32,538.92 = 21,679.65/x
  3. Step 3: Cross multiply
    21,804.39x = 32,538.92 × 21,679.65
  4. Step 4: Simplify right side
    21,804.39x = 705,432,288.58
  5. Step 5: Solve for x
    x = 705,432,288.58/21,804.39
  6. Step 6: Final answer
    x = 32,352.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.