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Finding the Fourth Proportional to 18,123.43, 27,192.06 and 7,037.90

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Solution

The fourth proportional to 18,123.43, 27,192.06 and 7,037.90 is: 10,559.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,123.43 : 27,192.06 = 7,037.90 : x
  2. Step 2: Convert to fraction form
    18,123.43/27,192.06 = 7,037.90/x
  3. Step 3: Cross multiply
    18,123.43x = 27,192.06 × 7,037.90
  4. Step 4: Simplify right side
    18,123.43x = 191,374,999.07
  5. Step 5: Solve for x
    x = 191,374,999.07/18,123.43
  6. Step 6: Final answer
    x = 10,559.54

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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.