Home / 12,795.41-17,657.21-7,129.87

Finding the Fourth Proportional to 12,795.41, 17,657.21 and 7,129.87

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Solution

The fourth proportional to 12,795.41, 17,657.21 and 7,129.87 is: 9,838.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,795.41 : 17,657.21 = 7,129.87 : x
  2. Step 2: Convert to fraction form
    12,795.41/17,657.21 = 7,129.87/x
  3. Step 3: Cross multiply
    12,795.41x = 17,657.21 × 7,129.87
  4. Step 4: Simplify right side
    12,795.41x = 125,893,585.54
  5. Step 5: Solve for x
    x = 125,893,585.54/12,795.41
  6. Step 6: Final answer
    x = 9,838.96

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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.