Home / 12,391.15-17,099.80-6,725.89

Finding the Fourth Proportional to 12,391.15, 17,099.80 and 6,725.89

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Solution

The fourth proportional to 12,391.15, 17,099.80 and 6,725.89 is: 9,281.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.15 : 17,099.80 = 6,725.89 : x
  2. Step 2: Convert to fraction form
    12,391.15/17,099.80 = 6,725.89/x
  3. Step 3: Cross multiply
    12,391.15x = 17,099.80 × 6,725.89
  4. Step 4: Simplify right side
    12,391.15x = 115,011,426.48
  5. Step 5: Solve for x
    x = 115,011,426.48/12,391.15
  6. Step 6: Final answer
    x = 9,281.74

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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.