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Finding the Fourth Proportional to 30,606.26, 45,942.19 and 15,811.20

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Solution

The fourth proportional to 30,606.26, 45,942.19 and 15,811.20 is: 23,733.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,606.26 : 45,942.19 = 15,811.20 : x
  2. Step 2: Convert to fraction form
    30,606.26/45,942.19 = 15,811.20/x
  3. Step 3: Cross multiply
    30,606.26x = 45,942.19 × 15,811.20
  4. Step 4: Simplify right side
    30,606.26x = 726,401,115
  5. Step 5: Solve for x
    x = 726,401,115/30,606.26
  6. Step 6: Final answer
    x = 23,733.75

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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.