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Finding the Fourth Proportional to 12,393.11, 18,573.25 and 9,090.74

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Solution

The fourth proportional to 12,393.11, 18,573.25 and 9,090.74 is: 13,624.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,393.11 : 18,573.25 = 9,090.74 : x
  2. Step 2: Convert to fraction form
    12,393.11/18,573.25 = 9,090.74/x
  3. Step 3: Cross multiply
    12,393.11x = 18,573.25 × 9,090.74
  4. Step 4: Simplify right side
    12,393.11x = 168,844,448.39
  5. Step 5: Solve for x
    x = 168,844,448.39/12,393.11
  6. Step 6: Final answer
    x = 13,624.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.