Home / 12,225.30-18,337.95-8,121.30

Finding the Fourth Proportional to 12,225.30, 18,337.95 and 8,121.30

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Solution

The fourth proportional to 12,225.30, 18,337.95 and 8,121.30 is: 12,181.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.30 : 18,337.95 = 8,121.30 : x
  2. Step 2: Convert to fraction form
    12,225.30/18,337.95 = 8,121.30/x
  3. Step 3: Cross multiply
    12,225.30x = 18,337.95 × 8,121.30
  4. Step 4: Simplify right side
    12,225.30x = 148,927,993.34
  5. Step 5: Solve for x
    x = 148,927,993.34/12,225.30
  6. Step 6: Final answer
    x = 12,181.95

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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.