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Finding the Fourth Proportional to 18,203.68, 27,312.09 and 6,359.21

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Solution

The fourth proportional to 18,203.68, 27,312.09 and 6,359.21 is: 9,541.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.68 : 27,312.09 = 6,359.21 : x
  2. Step 2: Convert to fraction form
    18,203.68/27,312.09 = 6,359.21/x
  3. Step 3: Cross multiply
    18,203.68x = 27,312.09 × 6,359.21
  4. Step 4: Simplify right side
    18,203.68x = 173,683,315.85
  5. Step 5: Solve for x
    x = 173,683,315.85/18,203.68
  6. Step 6: Final answer
    x = 9,541.11

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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.