Home / 21,600.11-29,806.63-11,909.13

Finding the Fourth Proportional to 21,600.11, 29,806.63 and 11,909.13

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Solution

The fourth proportional to 21,600.11, 29,806.63 and 11,909.13 is: 16,433.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,600.11 : 29,806.63 = 11,909.13 : x
  2. Step 2: Convert to fraction form
    21,600.11/29,806.63 = 11,909.13/x
  3. Step 3: Cross multiply
    21,600.11x = 29,806.63 × 11,909.13
  4. Step 4: Simplify right side
    21,600.11x = 354,971,001.76
  5. Step 5: Solve for x
    x = 354,971,001.76/21,600.11
  6. Step 6: Final answer
    x = 16,433.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.