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Finding the Fourth Proportional to 21,616.84, 32,426.97 and 6,826.90

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Solution

The fourth proportional to 21,616.84, 32,426.97 and 6,826.90 is: 10,240.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,616.84 : 32,426.97 = 6,826.90 : x
  2. Step 2: Convert to fraction form
    21,616.84/32,426.97 = 6,826.90/x
  3. Step 3: Cross multiply
    21,616.84x = 32,426.97 × 6,826.90
  4. Step 4: Simplify right side
    21,616.84x = 221,375,681.49
  5. Step 5: Solve for x
    x = 221,375,681.49/21,616.84
  6. Step 6: Final answer
    x = 10,240.89

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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.