Home / 20,106.50-27,746.98-11,155.44

Finding the Fourth Proportional to 20,106.50, 27,746.98 and 11,155.44

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Solution

The fourth proportional to 20,106.50, 27,746.98 and 11,155.44 is: 15,394.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.50 : 27,746.98 = 11,155.44 : x
  2. Step 2: Convert to fraction form
    20,106.50/27,746.98 = 11,155.44/x
  3. Step 3: Cross multiply
    20,106.50x = 27,746.98 × 11,155.44
  4. Step 4: Simplify right side
    20,106.50x = 309,529,770.57
  5. Step 5: Solve for x
    x = 309,529,770.57/20,106.50
  6. Step 6: Final answer
    x = 15,394.51

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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.