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Finding the Fourth Proportional to 13,015.01, 17,960.38 and 7,272.51

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Solution

The fourth proportional to 13,015.01, 17,960.38 and 7,272.51 is: 10,035.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.01 : 17,960.38 = 7,272.51 : x
  2. Step 2: Convert to fraction form
    13,015.01/17,960.38 = 7,272.51/x
  3. Step 3: Cross multiply
    13,015.01x = 17,960.38 × 7,272.51
  4. Step 4: Simplify right side
    13,015.01x = 130,617,024.97
  5. Step 5: Solve for x
    x = 130,617,024.97/13,015.01
  6. Step 6: Final answer
    x = 10,035.88

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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.