Home / 20,908.08-31,361.88-5,113.44

Finding the Fourth Proportional to 20,908.08, 31,361.88 and 5,113.44

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Solution

The fourth proportional to 20,908.08, 31,361.88 and 5,113.44 is: 7,670.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.08 : 31,361.88 = 5,113.44 : x
  2. Step 2: Convert to fraction form
    20,908.08/31,361.88 = 5,113.44/x
  3. Step 3: Cross multiply
    20,908.08x = 31,361.88 × 5,113.44
  4. Step 4: Simplify right side
    20,908.08x = 160,367,091.67
  5. Step 5: Solve for x
    x = 160,367,091.67/20,908.08
  6. Step 6: Final answer
    x = 7,670.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.