Home / 21,775.37-30,048.50-12,820.97

Finding the Fourth Proportional to 21,775.37, 30,048.50 and 12,820.97

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Solution

The fourth proportional to 21,775.37, 30,048.50 and 12,820.97 is: 17,692.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775.37 : 30,048.50 = 12,820.97 : x
  2. Step 2: Convert to fraction form
    21,775.37/30,048.50 = 12,820.97/x
  3. Step 3: Cross multiply
    21,775.37x = 30,048.50 × 12,820.97
  4. Step 4: Simplify right side
    21,775.37x = 385,250,702.70
  5. Step 5: Solve for x
    x = 385,250,702.70/21,775.37
  6. Step 6: Final answer
    x = 17,692.04

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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.