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Finding the Fourth Proportional to 39,258, 58,872.60 and 12,954.96

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Solution

The fourth proportional to 39,258, 58,872.60 and 12,954.96 is: 19,427.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,258 : 58,872.60 = 12,954.96 : x
  2. Step 2: Convert to fraction form
    39,258/58,872.60 = 12,954.96/x
  3. Step 3: Cross multiply
    39,258x = 58,872.60 × 12,954.96
  4. Step 4: Simplify right side
    39,258x = 762,692,178.10
  5. Step 5: Solve for x
    x = 762,692,178.10/39,258
  6. Step 6: Final answer
    x = 19,427.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.