Home / 11,946.78-17,920.58-3,182.58

Finding the Fourth Proportional to 11,946.78, 17,920.58 and 3,182.58

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Solution

The fourth proportional to 11,946.78, 17,920.58 and 3,182.58 is: 4,773.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,946.78 : 17,920.58 = 3,182.58 : x
  2. Step 2: Convert to fraction form
    11,946.78/17,920.58 = 3,182.58/x
  3. Step 3: Cross multiply
    11,946.78x = 17,920.58 × 3,182.58
  4. Step 4: Simplify right side
    11,946.78x = 57,033,663.58
  5. Step 5: Solve for x
    x = 57,033,663.58/11,946.78
  6. Step 6: Final answer
    x = 4,773.98

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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.