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Finding the Fourth Proportional to 12,356.54, 17,051.35 and 7,321.22

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Solution

The fourth proportional to 12,356.54, 17,051.35 and 7,321.22 is: 10,102.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356.54 : 17,051.35 = 7,321.22 : x
  2. Step 2: Convert to fraction form
    12,356.54/17,051.35 = 7,321.22/x
  3. Step 3: Cross multiply
    12,356.54x = 17,051.35 × 7,321.22
  4. Step 4: Simplify right side
    12,356.54x = 124,836,708.97
  5. Step 5: Solve for x
    x = 124,836,708.97/12,356.54
  6. Step 6: Final answer
    x = 10,102.89

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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.