Home / 30,087.42-45,138.34-9,310.92

Finding the Fourth Proportional to 30,087.42, 45,138.34 and 9,310.92

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Solution

The fourth proportional to 30,087.42, 45,138.34 and 9,310.92 is: 13,968.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,087.42 : 45,138.34 = 9,310.92 : x
  2. Step 2: Convert to fraction form
    30,087.42/45,138.34 = 9,310.92/x
  3. Step 3: Cross multiply
    30,087.42x = 45,138.34 × 9,310.92
  4. Step 4: Simplify right side
    30,087.42x = 420,279,472.67
  5. Step 5: Solve for x
    x = 420,279,472.67/30,087.42
  6. Step 6: Final answer
    x = 13,968.61

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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.