Home / 12,390.46-17,098.95-6,725.20

Finding the Fourth Proportional to 12,390.46, 17,098.95 and 6,725.20

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Solution

The fourth proportional to 12,390.46, 17,098.95 and 6,725.20 is: 9,280.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.46 : 17,098.95 = 6,725.20 : x
  2. Step 2: Convert to fraction form
    12,390.46/17,098.95 = 6,725.20/x
  3. Step 3: Cross multiply
    12,390.46x = 17,098.95 × 6,725.20
  4. Step 4: Simplify right side
    12,390.46x = 114,993,858.54
  5. Step 5: Solve for x
    x = 114,993,858.54/12,390.46
  6. Step 6: Final answer
    x = 9,280.84

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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.