Home / 20,271.20-27,933.05-15,706.44

Finding the Fourth Proportional to 20,271.20, 27,933.05 and 15,706.44

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Solution

The fourth proportional to 20,271.20, 27,933.05 and 15,706.44 is: 21,642.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.20 : 27,933.05 = 15,706.44 : x
  2. Step 2: Convert to fraction form
    20,271.20/27,933.05 = 15,706.44/x
  3. Step 3: Cross multiply
    20,271.20x = 27,933.05 × 15,706.44
  4. Step 4: Simplify right side
    20,271.20x = 438,728,813.11
  5. Step 5: Solve for x
    x = 438,728,813.11/20,271.20
  6. Step 6: Final answer
    x = 21,642.97

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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.