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Finding the Fourth Proportional to 21,797.57, 32,655.09 and 12,886.22

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Solution

The fourth proportional to 21,797.57, 32,655.09 and 12,886.22 is: 19,304.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,797.57 : 32,655.09 = 12,886.22 : x
  2. Step 2: Convert to fraction form
    21,797.57/32,655.09 = 12,886.22/x
  3. Step 3: Cross multiply
    21,797.57x = 32,655.09 × 12,886.22
  4. Step 4: Simplify right side
    21,797.57x = 420,800,673.86
  5. Step 5: Solve for x
    x = 420,800,673.86/21,797.57
  6. Step 6: Final answer
    x = 19,304.94

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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.