Home / 21,554.24-29,737.52-12,120.80

Finding the Fourth Proportional to 21,554.24, 29,737.52 and 12,120.80

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Solution

The fourth proportional to 21,554.24, 29,737.52 and 12,120.80 is: 16,722.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,554.24 : 29,737.52 = 12,120.80 : x
  2. Step 2: Convert to fraction form
    21,554.24/29,737.52 = 12,120.80/x
  3. Step 3: Cross multiply
    21,554.24x = 29,737.52 × 12,120.80
  4. Step 4: Simplify right side
    21,554.24x = 360,442,532.42
  5. Step 5: Solve for x
    x = 360,442,532.42/21,554.24
  6. Step 6: Final answer
    x = 16,722.58

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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.