Home / 12,875.85-19,313.78-5,480.55

Finding the Fourth Proportional to 12,875.85, 19,313.78 and 5,480.55

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Solution

The fourth proportional to 12,875.85, 19,313.78 and 5,480.55 is: 8,220.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,875.85 : 19,313.78 = 5,480.55 : x
  2. Step 2: Convert to fraction form
    12,875.85/19,313.78 = 5,480.55/x
  3. Step 3: Cross multiply
    12,875.85x = 19,313.78 × 5,480.55
  4. Step 4: Simplify right side
    12,875.85x = 105,850,109.58
  5. Step 5: Solve for x
    x = 105,850,109.58/12,875.85
  6. Step 6: Final answer
    x = 8,220.83

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.