Home / 13,550.49-18,658.13-11,862.45

Finding the Fourth Proportional to 13,550.49, 18,658.13 and 11,862.45

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Solution

The fourth proportional to 13,550.49, 18,658.13 and 11,862.45 is: 16,333.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,550.49 : 18,658.13 = 11,862.45 : x
  2. Step 2: Convert to fraction form
    13,550.49/18,658.13 = 11,862.45/x
  3. Step 3: Cross multiply
    13,550.49x = 18,658.13 × 11,862.45
  4. Step 4: Simplify right side
    13,550.49x = 221,331,134.22
  5. Step 5: Solve for x
    x = 221,331,134.22/13,550.49
  6. Step 6: Final answer
    x = 16,333.81

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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.