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Finding the Fourth Proportional to 18,343.98, 27,529.74 and 8,490.15

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Solution

The fourth proportional to 18,343.98, 27,529.74 and 8,490.15 is: 12,741.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,343.98 : 27,529.74 = 8,490.15 : x
  2. Step 2: Convert to fraction form
    18,343.98/27,529.74 = 8,490.15/x
  3. Step 3: Cross multiply
    18,343.98x = 27,529.74 × 8,490.15
  4. Step 4: Simplify right side
    18,343.98x = 233,731,622.06
  5. Step 5: Solve for x
    x = 233,731,622.06/18,343.98
  6. Step 6: Final answer
    x = 12,741.60

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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.