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Finding the Fourth Proportional to 12,719.76, 17,553.08 and 7,054.52

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Solution

The fourth proportional to 12,719.76, 17,553.08 and 7,054.52 is: 9,735.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,719.76 : 17,553.08 = 7,054.52 : x
  2. Step 2: Convert to fraction form
    12,719.76/17,553.08 = 7,054.52/x
  3. Step 3: Cross multiply
    12,719.76x = 17,553.08 × 7,054.52
  4. Step 4: Simplify right side
    12,719.76x = 123,828,553.92
  5. Step 5: Solve for x
    x = 123,828,553.92/12,719.76
  6. Step 6: Final answer
    x = 9,735.13

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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.