Home / 30,418.72-45,635.10-12,889.24

Finding the Fourth Proportional to 30,418.72, 45,635.10 and 12,889.24

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Solution

The fourth proportional to 30,418.72, 45,635.10 and 12,889.24 is: 19,336.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,418.72 : 45,635.10 = 12,889.24 : x
  2. Step 2: Convert to fraction form
    30,418.72/45,635.10 = 12,889.24/x
  3. Step 3: Cross multiply
    30,418.72x = 45,635.10 × 12,889.24
  4. Step 4: Simplify right side
    30,418.72x = 588,201,756.32
  5. Step 5: Solve for x
    x = 588,201,756.32/30,418.72
  6. Step 6: Final answer
    x = 19,336.83

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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.