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Finding the Fourth Proportional to 13,207.53, 18,226.53 and 7,239.45

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Solution

The fourth proportional to 13,207.53, 18,226.53 and 7,239.45 is: 9,990.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.53 : 18,226.53 = 7,239.45 : x
  2. Step 2: Convert to fraction form
    13,207.53/18,226.53 = 7,239.45/x
  3. Step 3: Cross multiply
    13,207.53x = 18,226.53 × 7,239.45
  4. Step 4: Simplify right side
    13,207.53x = 131,950,052.61
  5. Step 5: Solve for x
    x = 131,950,052.61/13,207.53
  6. Step 6: Final answer
    x = 9,990.52

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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.