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Finding the Fourth Proportional to 12,795.92, 17,657.90 and 7,130.37

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Solution

The fourth proportional to 12,795.92, 17,657.90 and 7,130.37 is: 9,839.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,795.92 : 17,657.90 = 7,130.37 : x
  2. Step 2: Convert to fraction form
    12,795.92/17,657.90 = 7,130.37/x
  3. Step 3: Cross multiply
    12,795.92x = 17,657.90 × 7,130.37
  4. Step 4: Simplify right side
    12,795.92x = 125,907,360.42
  5. Step 5: Solve for x
    x = 125,907,360.42/12,795.92
  6. Step 6: Final answer
    x = 9,839.65

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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.