Home / 12,210.30-18,315.45-11,262.60

Finding the Fourth Proportional to 12,210.30, 18,315.45 and 11,262.60

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Solution

The fourth proportional to 12,210.30, 18,315.45 and 11,262.60 is: 16,893.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.30 : 18,315.45 = 11,262.60 : x
  2. Step 2: Convert to fraction form
    12,210.30/18,315.45 = 11,262.60/x
  3. Step 3: Cross multiply
    12,210.30x = 18,315.45 × 11,262.60
  4. Step 4: Simplify right side
    12,210.30x = 206,279,587.17
  5. Step 5: Solve for x
    x = 206,279,587.17/12,210.30
  6. Step 6: Final answer
    x = 16,893.90

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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.