Home / 13,123.70-19,694.77-11,868.90

Finding the Fourth Proportional to 13,123.70, 19,694.77 and 11,868.90

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Solution

The fourth proportional to 13,123.70, 19,694.77 and 11,868.90 is: 17,811.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123.70 : 19,694.77 = 11,868.90 : x
  2. Step 2: Convert to fraction form
    13,123.70/19,694.77 = 11,868.90/x
  3. Step 3: Cross multiply
    13,123.70x = 19,694.77 × 11,868.90
  4. Step 4: Simplify right side
    13,123.70x = 233,755,299.84
  5. Step 5: Solve for x
    x = 233,755,299.84/13,123.70
  6. Step 6: Final answer
    x = 17,811.70

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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.