Home / 30,131.24-45,195-7,944.12

Finding the Fourth Proportional to 30,131.24, 45,195 and 7,944.12

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Solution

The fourth proportional to 30,131.24, 45,195 and 7,944.12 is: 11,915.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,131.24 : 45,195 = 7,944.12 : x
  2. Step 2: Convert to fraction form
    30,131.24/45,195 = 7,944.12/x
  3. Step 3: Cross multiply
    30,131.24x = 45,195 × 7,944.12
  4. Step 4: Simplify right side
    30,131.24x = 359,034,503.40
  5. Step 5: Solve for x
    x = 359,034,503.40/30,131.24
  6. Step 6: Final answer
    x = 11,915.69

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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.