Home / 21,914.64-30,258-19,785.96

Finding the Fourth Proportional to 21,914.64, 30,258 and 19,785.96

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Solution

The fourth proportional to 21,914.64, 30,258 and 19,785.96 is: 27,318.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,914.64 : 30,258 = 19,785.96 : x
  2. Step 2: Convert to fraction form
    21,914.64/30,258 = 19,785.96/x
  3. Step 3: Cross multiply
    21,914.64x = 30,258 × 19,785.96
  4. Step 4: Simplify right side
    21,914.64x = 598,683,577.68
  5. Step 5: Solve for x
    x = 598,683,577.68/21,914.64
  6. Step 6: Final answer
    x = 27,318.89

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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.