Home / 12,501.12-18,750.60-4,180.80

Finding the Fourth Proportional to 12,501.12, 18,750.60 and 4,180.80

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Solution

The fourth proportional to 12,501.12, 18,750.60 and 4,180.80 is: 6,270.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,501.12 : 18,750.60 = 4,180.80 : x
  2. Step 2: Convert to fraction form
    12,501.12/18,750.60 = 4,180.80/x
  3. Step 3: Cross multiply
    12,501.12x = 18,750.60 × 4,180.80
  4. Step 4: Simplify right side
    12,501.12x = 78,392,508.48
  5. Step 5: Solve for x
    x = 78,392,508.48/12,501.12
  6. Step 6: Final answer
    x = 6,270.84

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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.