Home / 12,247.76-16,905.69-7,211.58

Finding the Fourth Proportional to 12,247.76, 16,905.69 and 7,211.58

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Solution

The fourth proportional to 12,247.76, 16,905.69 and 7,211.58 is: 9,954.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,247.76 : 16,905.69 = 7,211.58 : x
  2. Step 2: Convert to fraction form
    12,247.76/16,905.69 = 7,211.58/x
  3. Step 3: Cross multiply
    12,247.76x = 16,905.69 × 7,211.58
  4. Step 4: Simplify right side
    12,247.76x = 121,916,735.89
  5. Step 5: Solve for x
    x = 121,916,735.89/12,247.76
  6. Step 6: Final answer
    x = 9,954.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.