Home / 34,876.10-48,129.21-20,536.56

Finding the Fourth Proportional to 34,876.10, 48,129.21 and 20,536.56

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Solution

The fourth proportional to 34,876.10, 48,129.21 and 20,536.56 is: 28,340.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,876.10 : 48,129.21 = 20,536.56 : x
  2. Step 2: Convert to fraction form
    34,876.10/48,129.21 = 20,536.56/x
  3. Step 3: Cross multiply
    34,876.10x = 48,129.21 × 20,536.56
  4. Step 4: Simplify right side
    34,876.10x = 988,408,408.92
  5. Step 5: Solve for x
    x = 988,408,408.92/34,876.10
  6. Step 6: Final answer
    x = 28,340.57

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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.