Home / 20,325.42-30,480.12-7,838.58

Finding the Fourth Proportional to 20,325.42, 30,480.12 and 7,838.58

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Solution

The fourth proportional to 20,325.42, 30,480.12 and 7,838.58 is: 11,754.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,325.42 : 30,480.12 = 7,838.58 : x
  2. Step 2: Convert to fraction form
    20,325.42/30,480.12 = 7,838.58/x
  3. Step 3: Cross multiply
    20,325.42x = 30,480.12 × 7,838.58
  4. Step 4: Simplify right side
    20,325.42x = 238,920,859.03
  5. Step 5: Solve for x
    x = 238,920,859.03/20,325.42
  6. Step 6: Final answer
    x = 11,754.78

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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.