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Finding the Fourth Proportional to 18,314.61, 27,453.39 and 7,216.98

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Solution

The fourth proportional to 18,314.61, 27,453.39 and 7,216.98 is: 10,818.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,314.61 : 27,453.39 = 7,216.98 : x
  2. Step 2: Convert to fraction form
    18,314.61/27,453.39 = 7,216.98/x
  3. Step 3: Cross multiply
    18,314.61x = 27,453.39 × 7,216.98
  4. Step 4: Simplify right side
    18,314.61x = 198,130,429.30
  5. Step 5: Solve for x
    x = 198,130,429.30/18,314.61
  6. Step 6: Final answer
    x = 10,818.17

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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.