Home / 21,554.20-29,747.16-12,122.56

Finding the Fourth Proportional to 21,554.20, 29,747.16 and 12,122.56

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Solution

The fourth proportional to 21,554.20, 29,747.16 and 12,122.56 is: 16,730.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,554.20 : 29,747.16 = 12,122.56 : x
  2. Step 2: Convert to fraction form
    21,554.20/29,747.16 = 12,122.56/x
  3. Step 3: Cross multiply
    21,554.20x = 29,747.16 × 12,122.56
  4. Step 4: Simplify right side
    21,554.20x = 360,611,731.93
  5. Step 5: Solve for x
    x = 360,611,731.93/21,554.20
  6. Step 6: Final answer
    x = 16,730.46

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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.