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Finding the Fourth Proportional to 13,211.00, 18,232.03 and 7,242.68

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Solution

The fourth proportional to 13,211.00, 18,232.03 and 7,242.68 is: 9,995.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.00 : 18,232.03 = 7,242.68 : x
  2. Step 2: Convert to fraction form
    13,211.00/18,232.03 = 7,242.68/x
  3. Step 3: Cross multiply
    13,211.00x = 18,232.03 × 7,242.68
  4. Step 4: Simplify right side
    13,211.00x = 132,048,722.83
  5. Step 5: Solve for x
    x = 132,048,722.83/13,211.00
  6. Step 6: Final answer
    x = 9,995.37

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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.