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Finding the Fourth Proportional to 18,645.78, 27,968.54 and 7,552.30

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Solution

The fourth proportional to 18,645.78, 27,968.54 and 7,552.30 is: 11,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.78 : 27,968.54 = 7,552.30 : x
  2. Step 2: Convert to fraction form
    18,645.78/27,968.54 = 7,552.30/x
  3. Step 3: Cross multiply
    18,645.78x = 27,968.54 × 7,552.30
  4. Step 4: Simplify right side
    18,645.78x = 211,226,804.64
  5. Step 5: Solve for x
    x = 211,226,804.64/18,645.78
  6. Step 6: Final answer
    x = 11,328.40

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1.5x scale

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.