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Finding the Fourth Proportional to 21,496.80, 32,266.08 and 20,313.48

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Solution

The fourth proportional to 21,496.80, 32,266.08 and 20,313.48 is: 30,489.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,496.80 : 32,266.08 = 20,313.48 : x
  2. Step 2: Convert to fraction form
    21,496.80/32,266.08 = 20,313.48/x
  3. Step 3: Cross multiply
    21,496.80x = 32,266.08 × 20,313.48
  4. Step 4: Simplify right side
    21,496.80x = 655,436,370.76
  5. Step 5: Solve for x
    x = 655,436,370.76/21,496.80
  6. Step 6: Final answer
    x = 30,489.95

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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.