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Finding the Fourth Proportional to 18,858.72, 25,998 and 13,252.32

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Solution

The fourth proportional to 18,858.72, 25,998 and 13,252.32 is: 18,269.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858.72 : 25,998 = 13,252.32 : x
  2. Step 2: Convert to fraction form
    18,858.72/25,998 = 13,252.32/x
  3. Step 3: Cross multiply
    18,858.72x = 25,998 × 13,252.32
  4. Step 4: Simplify right side
    18,858.72x = 344,533,815.36
  5. Step 5: Solve for x
    x = 344,533,815.36/18,858.72
  6. Step 6: Final answer
    x = 18,269.20

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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.