Home / 12,390.60-17,098.75-6,725.36

Finding the Fourth Proportional to 12,390.60, 17,098.75 and 6,725.36

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Solution

The fourth proportional to 12,390.60, 17,098.75 and 6,725.36 is: 9,280.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.60 : 17,098.75 = 6,725.36 : x
  2. Step 2: Convert to fraction form
    12,390.60/17,098.75 = 6,725.36/x
  3. Step 3: Cross multiply
    12,390.60x = 17,098.75 × 6,725.36
  4. Step 4: Simplify right side
    12,390.60x = 114,995,300.45
  5. Step 5: Solve for x
    x = 114,995,300.45/12,390.60
  6. Step 6: Final answer
    x = 9,280.85

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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.