Home / 30,115.83-45,174.48-10,125.61

Finding the Fourth Proportional to 30,115.83, 45,174.48 and 10,125.61

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Solution

The fourth proportional to 30,115.83, 45,174.48 and 10,125.61 is: 15,188.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,115.83 : 45,174.48 = 10,125.61 : x
  2. Step 2: Convert to fraction form
    30,115.83/45,174.48 = 10,125.61/x
  3. Step 3: Cross multiply
    30,115.83x = 45,174.48 × 10,125.61
  4. Step 4: Simplify right side
    30,115.83x = 457,419,166.43
  5. Step 5: Solve for x
    x = 457,419,166.43/30,115.83
  6. Step 6: Final answer
    x = 15,188.66

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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.