Home / 20,107.08-27,747.45-11,154.42

Finding the Fourth Proportional to 20,107.08, 27,747.45 and 11,154.42

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Solution

The fourth proportional to 20,107.08, 27,747.45 and 11,154.42 is: 15,392.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.08 : 27,747.45 = 11,154.42 : x
  2. Step 2: Convert to fraction form
    20,107.08/27,747.45 = 11,154.42/x
  3. Step 3: Cross multiply
    20,107.08x = 27,747.45 × 11,154.42
  4. Step 4: Simplify right side
    20,107.08x = 309,506,711.23
  5. Step 5: Solve for x
    x = 309,506,711.23/20,107.08
  6. Step 6: Final answer
    x = 15,392.92

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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.