Home / 21,221.49-29,282.40-12,267.27

Finding the Fourth Proportional to 21,221.49, 29,282.40 and 12,267.27

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Solution

The fourth proportional to 21,221.49, 29,282.40 and 12,267.27 is: 16,926.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,221.49 : 29,282.40 = 12,267.27 : x
  2. Step 2: Convert to fraction form
    21,221.49/29,282.40 = 12,267.27/x
  3. Step 3: Cross multiply
    21,221.49x = 29,282.40 × 12,267.27
  4. Step 4: Simplify right side
    21,221.49x = 359,215,107.05
  5. Step 5: Solve for x
    x = 359,215,107.05/21,221.49
  6. Step 6: Final answer
    x = 16,926.95

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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.