Home / 21,340.11-29,446.64-11,909.07

Finding the Fourth Proportional to 21,340.11, 29,446.64 and 11,909.07

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Solution

The fourth proportional to 21,340.11, 29,446.64 and 11,909.07 is: 16,433.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.11 : 29,446.64 = 11,909.07 : x
  2. Step 2: Convert to fraction form
    21,340.11/29,446.64 = 11,909.07/x
  3. Step 3: Cross multiply
    21,340.11x = 29,446.64 × 11,909.07
  4. Step 4: Simplify right side
    21,340.11x = 350,682,037.48
  5. Step 5: Solve for x
    x = 350,682,037.48/21,340.11
  6. Step 6: Final answer
    x = 16,433.00

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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.