Home / 20,276.32-27,981.39-11,324.16

Finding the Fourth Proportional to 20,276.32, 27,981.39 and 11,324.16

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Solution

The fourth proportional to 20,276.32, 27,981.39 and 11,324.16 is: 15,627.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.32 : 27,981.39 = 11,324.16 : x
  2. Step 2: Convert to fraction form
    20,276.32/27,981.39 = 11,324.16/x
  3. Step 3: Cross multiply
    20,276.32x = 27,981.39 × 11,324.16
  4. Step 4: Simplify right side
    20,276.32x = 316,865,569.17
  5. Step 5: Solve for x
    x = 316,865,569.17/20,276.32
  6. Step 6: Final answer
    x = 15,627.37

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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.