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Finding the Fourth Proportional to 12,555.53, 17,321.44 and 7,246.58

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Solution

The fourth proportional to 12,555.53, 17,321.44 and 7,246.58 is: 9,997.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.53 : 17,321.44 = 7,246.58 : x
  2. Step 2: Convert to fraction form
    12,555.53/17,321.44 = 7,246.58/x
  3. Step 3: Cross multiply
    12,555.53x = 17,321.44 × 7,246.58
  4. Step 4: Simplify right side
    12,555.53x = 125,521,200.68
  5. Step 5: Solve for x
    x = 125,521,200.68/12,555.53
  6. Step 6: Final answer
    x = 9,997.28

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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.