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Finding the Fourth Proportional to 13,079.51, 18,049.65 and 7,415.33

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Solution

The fourth proportional to 13,079.51, 18,049.65 and 7,415.33 is: 10,233.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.51 : 18,049.65 = 7,415.33 : x
  2. Step 2: Convert to fraction form
    13,079.51/18,049.65 = 7,415.33/x
  3. Step 3: Cross multiply
    13,079.51x = 18,049.65 × 7,415.33
  4. Step 4: Simplify right side
    13,079.51x = 133,844,156.26
  5. Step 5: Solve for x
    x = 133,844,156.26/13,079.51
  6. Step 6: Final answer
    x = 10,233.12

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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.