Home / 20,106.96-27,746.64-11,153.76

Finding the Fourth Proportional to 20,106.96, 27,746.64 and 11,153.76

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Solution

The fourth proportional to 20,106.96, 27,746.64 and 11,153.76 is: 15,391.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.96 : 27,746.64 = 11,153.76 : x
  2. Step 2: Convert to fraction form
    20,106.96/27,746.64 = 11,153.76/x
  3. Step 3: Cross multiply
    20,106.96x = 27,746.64 × 11,153.76
  4. Step 4: Simplify right side
    20,106.96x = 309,479,363.37
  5. Step 5: Solve for x
    x = 309,479,363.37/20,106.96
  6. Step 6: Final answer
    x = 15,391.65

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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.