Home / 20,224.11-27,908.90-11,271.42

Finding the Fourth Proportional to 20,224.11, 27,908.90 and 11,271.42

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Solution

The fourth proportional to 20,224.11, 27,908.90 and 11,271.42 is: 15,554.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,224.11 : 27,908.90 = 11,271.42 : x
  2. Step 2: Convert to fraction form
    20,224.11/27,908.90 = 11,271.42/x
  3. Step 3: Cross multiply
    20,224.11x = 27,908.90 × 11,271.42
  4. Step 4: Simplify right side
    20,224.11x = 314,572,877.28
  5. Step 5: Solve for x
    x = 314,572,877.28/20,224.11
  6. Step 6: Final answer
    x = 15,554.35

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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.