Home / 12,240.11-16,899.13-8,418.03

Finding the Fourth Proportional to 12,240.11, 16,899.13 and 8,418.03

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Solution

The fourth proportional to 12,240.11, 16,899.13 and 8,418.03 is: 11,622.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.11 : 16,899.13 = 8,418.03 : x
  2. Step 2: Convert to fraction form
    12,240.11/16,899.13 = 8,418.03/x
  3. Step 3: Cross multiply
    12,240.11x = 16,899.13 × 8,418.03
  4. Step 4: Simplify right side
    12,240.11x = 142,257,330.46
  5. Step 5: Solve for x
    x = 142,257,330.46/12,240.11
  6. Step 6: Final answer
    x = 11,622.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.