Home / 20,106.70-27,746.74-11,154.40

Finding the Fourth Proportional to 20,106.70, 27,746.74 and 11,154.40

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Solution

The fourth proportional to 20,106.70, 27,746.74 and 11,154.40 is: 15,392.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.70 : 27,746.74 = 11,154.40 : x
  2. Step 2: Convert to fraction form
    20,106.70/27,746.74 = 11,154.40/x
  3. Step 3: Cross multiply
    20,106.70x = 27,746.74 × 11,154.40
  4. Step 4: Simplify right side
    20,106.70x = 309,498,236.66
  5. Step 5: Solve for x
    x = 309,498,236.66/20,106.70
  6. Step 6: Final answer
    x = 15,392.79

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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.