Home / 12,187.30-18,280.95-8,906.80

Finding the Fourth Proportional to 12,187.30, 18,280.95 and 8,906.80

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Solution

The fourth proportional to 12,187.30, 18,280.95 and 8,906.80 is: 13,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.30 : 18,280.95 = 8,906.80 : x
  2. Step 2: Convert to fraction form
    12,187.30/18,280.95 = 8,906.80/x
  3. Step 3: Cross multiply
    12,187.30x = 18,280.95 × 8,906.80
  4. Step 4: Simplify right side
    12,187.30x = 162,824,765.46
  5. Step 5: Solve for x
    x = 162,824,765.46/12,187.30
  6. Step 6: Final answer
    x = 13,360.20

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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.