Home / 12,390.32-17,098.26-6,724.80

Finding the Fourth Proportional to 12,390.32, 17,098.26 and 6,724.80

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Solution

The fourth proportional to 12,390.32, 17,098.26 and 6,724.80 is: 9,280.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.32 : 17,098.26 = 6,724.80 : x
  2. Step 2: Convert to fraction form
    12,390.32/17,098.26 = 6,724.80/x
  3. Step 3: Cross multiply
    12,390.32x = 17,098.26 × 6,724.80
  4. Step 4: Simplify right side
    12,390.32x = 114,982,378.85
  5. Step 5: Solve for x
    x = 114,982,378.85/12,390.32
  6. Step 6: Final answer
    x = 9,280.02

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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.