Home / 12,390.40-17,098.62-6,725.14

Finding the Fourth Proportional to 12,390.40, 17,098.62 and 6,725.14

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Solution

The fourth proportional to 12,390.40, 17,098.62 and 6,725.14 is: 9,280.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.40 : 17,098.62 = 6,725.14 : x
  2. Step 2: Convert to fraction form
    12,390.40/17,098.62 = 6,725.14/x
  3. Step 3: Cross multiply
    12,390.40x = 17,098.62 × 6,725.14
  4. Step 4: Simplify right side
    12,390.40x = 114,990,613.31
  5. Step 5: Solve for x
    x = 114,990,613.31/12,390.40
  6. Step 6: Final answer
    x = 9,280.62

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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.