Home / 21,704.90-29,947.93-13,211.44

Finding the Fourth Proportional to 21,704.90, 29,947.93 and 13,211.44

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Solution

The fourth proportional to 21,704.90, 29,947.93 and 13,211.44 is: 18,228.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,704.90 : 29,947.93 = 13,211.44 : x
  2. Step 2: Convert to fraction form
    21,704.90/29,947.93 = 13,211.44/x
  3. Step 3: Cross multiply
    21,704.90x = 29,947.93 × 13,211.44
  4. Step 4: Simplify right side
    21,704.90x = 395,655,172.42
  5. Step 5: Solve for x
    x = 395,655,172.42/21,704.90
  6. Step 6: Final answer
    x = 18,228.85

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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.