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Finding the Fourth Proportional to 18,622.65, 27,938.93 and 8,088.15

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Solution

The fourth proportional to 18,622.65, 27,938.93 and 8,088.15 is: 12,134.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,622.65 : 27,938.93 = 8,088.15 : x
  2. Step 2: Convert to fraction form
    18,622.65/27,938.93 = 8,088.15/x
  3. Step 3: Cross multiply
    18,622.65x = 27,938.93 × 8,088.15
  4. Step 4: Simplify right side
    18,622.65x = 225,974,216.24
  5. Step 5: Solve for x
    x = 225,974,216.24/18,622.65
  6. Step 6: Final answer
    x = 12,134.37

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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.