Home / 35,107.80-48,445.12-20,958.72

Finding the Fourth Proportional to 35,107.80, 48,445.12 and 20,958.72

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Solution

The fourth proportional to 35,107.80, 48,445.12 and 20,958.72 is: 28,920.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,107.80 : 48,445.12 = 20,958.72 : x
  2. Step 2: Convert to fraction form
    35,107.80/48,445.12 = 20,958.72/x
  3. Step 3: Cross multiply
    35,107.80x = 48,445.12 × 20,958.72
  4. Step 4: Simplify right side
    35,107.80x = 1,015,347,705.45
  5. Step 5: Solve for x
    x = 1,015,347,705.45/35,107.80
  6. Step 6: Final answer
    x = 28,920.86

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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.