Home / 21,209.06-29,269.42-11,777.63

Finding the Fourth Proportional to 21,209.06, 29,269.42 and 11,777.63

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Solution

The fourth proportional to 21,209.06, 29,269.42 and 11,777.63 is: 16,253.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.06 : 29,269.42 = 11,777.63 : x
  2. Step 2: Convert to fraction form
    21,209.06/29,269.42 = 11,777.63/x
  3. Step 3: Cross multiply
    21,209.06x = 29,269.42 × 11,777.63
  4. Step 4: Simplify right side
    21,209.06x = 344,724,223.28
  5. Step 5: Solve for x
    x = 344,724,223.28/21,209.06
  6. Step 6: Final answer
    x = 16,253.63

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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.