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Finding the Fourth Proportional to 36,258, 54,387 and 12,885.36

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Solution

The fourth proportional to 36,258, 54,387 and 12,885.36 is: 19,328.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,258 : 54,387 = 12,885.36 : x
  2. Step 2: Convert to fraction form
    36,258/54,387 = 12,885.36/x
  3. Step 3: Cross multiply
    36,258x = 54,387 × 12,885.36
  4. Step 4: Simplify right side
    36,258x = 700,796,074.32
  5. Step 5: Solve for x
    x = 700,796,074.32/36,258
  6. Step 6: Final answer
    x = 19,328.04

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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.