Home / 20,098.28-27,736.32-12,138.92

Finding the Fourth Proportional to 20,098.28, 27,736.32 and 12,138.92

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Solution

The fourth proportional to 20,098.28, 27,736.32 and 12,138.92 is: 16,752.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,098.28 : 27,736.32 = 12,138.92 : x
  2. Step 2: Convert to fraction form
    20,098.28/27,736.32 = 12,138.92/x
  3. Step 3: Cross multiply
    20,098.28x = 27,736.32 × 12,138.92
  4. Step 4: Simplify right side
    20,098.28x = 336,688,969.57
  5. Step 5: Solve for x
    x = 336,688,969.57/20,098.28
  6. Step 6: Final answer
    x = 16,752.13

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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.