Home / 30,105.88-45,161.34-12,577.24

Finding the Fourth Proportional to 30,105.88, 45,161.34 and 12,577.24

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Solution

The fourth proportional to 30,105.88, 45,161.34 and 12,577.24 is: 18,866.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,105.88 : 45,161.34 = 12,577.24 : x
  2. Step 2: Convert to fraction form
    30,105.88/45,161.34 = 12,577.24/x
  3. Step 3: Cross multiply
    30,105.88x = 45,161.34 × 12,577.24
  4. Step 4: Simplify right side
    30,105.88x = 568,005,011.90
  5. Step 5: Solve for x
    x = 568,005,011.90/30,105.88
  6. Step 6: Final answer
    x = 18,866.91

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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.