Home / 20,106.72-27,747.07-11,153.99

Finding the Fourth Proportional to 20,106.72, 27,747.07 and 11,153.99

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Solution

The fourth proportional to 20,106.72, 27,747.07 and 11,153.99 is: 15,392.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.72 : 27,747.07 = 11,153.99 : x
  2. Step 2: Convert to fraction form
    20,106.72/27,747.07 = 11,153.99/x
  3. Step 3: Cross multiply
    20,106.72x = 27,747.07 × 11,153.99
  4. Step 4: Simplify right side
    20,106.72x = 309,490,582.79
  5. Step 5: Solve for x
    x = 309,490,582.79/20,106.72
  6. Step 6: Final answer
    x = 15,392.40

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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.