Home / 45,011.27-67,520.27-13,418.91

Finding the Fourth Proportional to 45,011.27, 67,520.27 and 13,418.91

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Solution

The fourth proportional to 45,011.27, 67,520.27 and 13,418.91 is: 20,129.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,011.27 : 67,520.27 = 13,418.91 : x
  2. Step 2: Convert to fraction form
    45,011.27/67,520.27 = 13,418.91/x
  3. Step 3: Cross multiply
    45,011.27x = 67,520.27 × 13,418.91
  4. Step 4: Simplify right side
    45,011.27x = 906,048,459.85
  5. Step 5: Solve for x
    x = 906,048,459.85/45,011.27
  6. Step 6: Final answer
    x = 20,129.37

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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.