Home / 21,557.70-29,747.52-12,126.06

Finding the Fourth Proportional to 21,557.70, 29,747.52 and 12,126.06

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Solution

The fourth proportional to 21,557.70, 29,747.52 and 12,126.06 is: 16,732.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,557.70 : 29,747.52 = 12,126.06 : x
  2. Step 2: Convert to fraction form
    21,557.70/29,747.52 = 12,126.06/x
  3. Step 3: Cross multiply
    21,557.70x = 29,747.52 × 12,126.06
  4. Step 4: Simplify right side
    21,557.70x = 360,720,212.37
  5. Step 5: Solve for x
    x = 360,720,212.37/21,557.70
  6. Step 6: Final answer
    x = 16,732.78

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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.