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Finding the Fourth Proportional to 17,645.78, 24,352.74 and 9,689.54

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Solution

The fourth proportional to 17,645.78, 24,352.74 and 9,689.54 is: 13,372.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,645.78 : 24,352.74 = 9,689.54 : x
  2. Step 2: Convert to fraction form
    17,645.78/24,352.74 = 9,689.54/x
  3. Step 3: Cross multiply
    17,645.78x = 24,352.74 × 9,689.54
  4. Step 4: Simplify right side
    17,645.78x = 235,966,848.34
  5. Step 5: Solve for x
    x = 235,966,848.34/17,645.78
  6. Step 6: Final answer
    x = 13,372.42

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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.