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Finding the Fourth Proportional to 12,749.50, 17,595.96 and 7,160.50

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Solution

The fourth proportional to 12,749.50, 17,595.96 and 7,160.50 is: 9,882.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.50 : 17,595.96 = 7,160.50 : x
  2. Step 2: Convert to fraction form
    12,749.50/17,595.96 = 7,160.50/x
  3. Step 3: Cross multiply
    12,749.50x = 17,595.96 × 7,160.50
  4. Step 4: Simplify right side
    12,749.50x = 125,995,871.58
  5. Step 5: Solve for x
    x = 125,995,871.58/12,749.50
  6. Step 6: Final answer
    x = 9,882.42

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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.