Home / 13,081.80-18,045.77-8,292.99

Finding the Fourth Proportional to 13,081.80, 18,045.77 and 8,292.99

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Solution

The fourth proportional to 13,081.80, 18,045.77 and 8,292.99 is: 11,439.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.80 : 18,045.77 = 8,292.99 : x
  2. Step 2: Convert to fraction form
    13,081.80/18,045.77 = 8,292.99/x
  3. Step 3: Cross multiply
    13,081.80x = 18,045.77 × 8,292.99
  4. Step 4: Simplify right side
    13,081.80x = 149,653,348.69
  5. Step 5: Solve for x
    x = 149,653,348.69/13,081.80
  6. Step 6: Final answer
    x = 11,439.81

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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.