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Finding the Fourth Proportional to 18,203.68, 27,305.34 and 8,340.16

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Solution

The fourth proportional to 18,203.68, 27,305.34 and 8,340.16 is: 12,510.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.68 : 27,305.34 = 8,340.16 : x
  2. Step 2: Convert to fraction form
    18,203.68/27,305.34 = 8,340.16/x
  3. Step 3: Cross multiply
    18,203.68x = 27,305.34 × 8,340.16
  4. Step 4: Simplify right side
    18,203.68x = 227,730,904.45
  5. Step 5: Solve for x
    x = 227,730,904.45/18,203.68
  6. Step 6: Final answer
    x = 12,510.16

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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.