Home / 20,106.08-27,747.30-11,153.04

Finding the Fourth Proportional to 20,106.08, 27,747.30 and 11,153.04

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Solution

The fourth proportional to 20,106.08, 27,747.30 and 11,153.04 is: 15,391.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.08 : 27,747.30 = 11,153.04 : x
  2. Step 2: Convert to fraction form
    20,106.08/27,747.30 = 11,153.04/x
  3. Step 3: Cross multiply
    20,106.08x = 27,747.30 × 11,153.04
  4. Step 4: Simplify right side
    20,106.08x = 309,466,746.79
  5. Step 5: Solve for x
    x = 309,466,746.79/20,106.08
  6. Step 6: Final answer
    x = 15,391.70

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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.