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Finding the Fourth Proportional to 18,378.57, 27,576.96 and 7,285.01

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Solution

The fourth proportional to 18,378.57, 27,576.96 and 7,285.01 is: 10,931.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378.57 : 27,576.96 = 7,285.01 : x
  2. Step 2: Convert to fraction form
    18,378.57/27,576.96 = 7,285.01/x
  3. Step 3: Cross multiply
    18,378.57x = 27,576.96 × 7,285.01
  4. Step 4: Simplify right side
    18,378.57x = 200,898,429.37
  5. Step 5: Solve for x
    x = 200,898,429.37/18,378.57
  6. Step 6: Final answer
    x = 10,931.12

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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.