Home / 20,231.80-27,916.50-11,277.34

Finding the Fourth Proportional to 20,231.80, 27,916.50 and 11,277.34

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Solution

The fourth proportional to 20,231.80, 27,916.50 and 11,277.34 is: 15,560.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.80 : 27,916.50 = 11,277.34 : x
  2. Step 2: Convert to fraction form
    20,231.80/27,916.50 = 11,277.34/x
  3. Step 3: Cross multiply
    20,231.80x = 27,916.50 × 11,277.34
  4. Step 4: Simplify right side
    20,231.80x = 314,823,862.11
  5. Step 5: Solve for x
    x = 314,823,862.11/20,231.80
  6. Step 6: Final answer
    x = 15,560.84

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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.