Home / 20,106.72-27,748.84-11,155.95

Finding the Fourth Proportional to 20,106.72, 27,748.84 and 11,155.95

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Solution

The fourth proportional to 20,106.72, 27,748.84 and 11,155.95 is: 15,396.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.72 : 27,748.84 = 11,155.95 : x
  2. Step 2: Convert to fraction form
    20,106.72/27,748.84 = 11,155.95/x
  3. Step 3: Cross multiply
    20,106.72x = 27,748.84 × 11,155.95
  4. Step 4: Simplify right side
    20,106.72x = 309,564,671.60
  5. Step 5: Solve for x
    x = 309,564,671.60/20,106.72
  6. Step 6: Final answer
    x = 15,396.08

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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.