Home / 34,872.78-48,120.84-20,722.90

Finding the Fourth Proportional to 34,872.78, 48,120.84 and 20,722.90

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Solution

The fourth proportional to 34,872.78, 48,120.84 and 20,722.90 is: 28,595.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,872.78 : 48,120.84 = 20,722.90 : x
  2. Step 2: Convert to fraction form
    34,872.78/48,120.84 = 20,722.90/x
  3. Step 3: Cross multiply
    34,872.78x = 48,120.84 × 20,722.90
  4. Step 4: Simplify right side
    34,872.78x = 997,203,355.24
  5. Step 5: Solve for x
    x = 997,203,355.24/34,872.78
  6. Step 6: Final answer
    x = 28,595.46

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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.