Home / 12,214.74-18,285.66-12,005.76

Finding the Fourth Proportional to 12,214.74, 18,285.66 and 12,005.76

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Solution

The fourth proportional to 12,214.74, 18,285.66 and 12,005.76 is: 17,972.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,214.74 : 18,285.66 = 12,005.76 : x
  2. Step 2: Convert to fraction form
    12,214.74/18,285.66 = 12,005.76/x
  3. Step 3: Cross multiply
    12,214.74x = 18,285.66 × 12,005.76
  4. Step 4: Simplify right side
    12,214.74x = 219,533,245.40
  5. Step 5: Solve for x
    x = 219,533,245.40/12,214.74
  6. Step 6: Final answer
    x = 17,972.81

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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.