Home / 20,258.78-27,956.93-11,305.71

Finding the Fourth Proportional to 20,258.78, 27,956.93 and 11,305.71

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Solution

The fourth proportional to 20,258.78, 27,956.93 and 11,305.71 is: 15,601.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.78 : 27,956.93 = 11,305.71 : x
  2. Step 2: Convert to fraction form
    20,258.78/27,956.93 = 11,305.71/x
  3. Step 3: Cross multiply
    20,258.78x = 27,956.93 × 11,305.71
  4. Step 4: Simplify right side
    20,258.78x = 316,072,886.54
  5. Step 5: Solve for x
    x = 316,072,886.54/20,258.78
  6. Step 6: Final answer
    x = 15,601.78

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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.