Home / 12,391.32-17,099.64-6,725.80

Finding the Fourth Proportional to 12,391.32, 17,099.64 and 6,725.80

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Solution

The fourth proportional to 12,391.32, 17,099.64 and 6,725.80 is: 9,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.32 : 17,099.64 = 6,725.80 : x
  2. Step 2: Convert to fraction form
    12,391.32/17,099.64 = 6,725.80/x
  3. Step 3: Cross multiply
    12,391.32x = 17,099.64 × 6,725.80
  4. Step 4: Simplify right side
    12,391.32x = 115,008,758.71
  5. Step 5: Solve for x
    x = 115,008,758.71/12,391.32
  6. Step 6: Final answer
    x = 9,281.40

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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.