Home / 13,123.79-19,694.91-11,868.99

Finding the Fourth Proportional to 13,123.79, 19,694.91 and 11,868.99

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Solution

The fourth proportional to 13,123.79, 19,694.91 and 11,868.99 is: 17,811.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123.79 : 19,694.91 = 11,868.99 : x
  2. Step 2: Convert to fraction form
    13,123.79/19,694.91 = 11,868.99/x
  3. Step 3: Cross multiply
    13,123.79x = 19,694.91 × 11,868.99
  4. Step 4: Simplify right side
    13,123.79x = 233,758,719.19
  5. Step 5: Solve for x
    x = 233,758,719.19/13,123.79
  6. Step 6: Final answer
    x = 17,811.84

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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.