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Finding the Fourth Proportional to 13,049.14, 18,004.69 and 7,458.74

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Solution

The fourth proportional to 13,049.14, 18,004.69 and 7,458.74 is: 10,291.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,049.14 : 18,004.69 = 7,458.74 : x
  2. Step 2: Convert to fraction form
    13,049.14/18,004.69 = 7,458.74/x
  3. Step 3: Cross multiply
    13,049.14x = 18,004.69 × 7,458.74
  4. Step 4: Simplify right side
    13,049.14x = 134,292,301.49
  5. Step 5: Solve for x
    x = 134,292,301.49/13,049.14
  6. Step 6: Final answer
    x = 10,291.28

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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.