Home / 19,888.35-27,446.72-11,391.87

Finding the Fourth Proportional to 19,888.35, 27,446.72 and 11,391.87

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Solution

The fourth proportional to 19,888.35, 27,446.72 and 11,391.87 is: 15,721.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,888.35 : 27,446.72 = 11,391.87 : x
  2. Step 2: Convert to fraction form
    19,888.35/27,446.72 = 11,391.87/x
  3. Step 3: Cross multiply
    19,888.35x = 27,446.72 × 11,391.87
  4. Step 4: Simplify right side
    19,888.35x = 312,669,409.21
  5. Step 5: Solve for x
    x = 312,669,409.21/19,888.35
  6. Step 6: Final answer
    x = 15,721.23

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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.