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Finding the Fourth Proportional to 18,636.18, 27,959.13 and 6,949.50

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Solution

The fourth proportional to 18,636.18, 27,959.13 and 6,949.50 is: 10,426.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.18 : 27,959.13 = 6,949.50 : x
  2. Step 2: Convert to fraction form
    18,636.18/27,959.13 = 6,949.50/x
  3. Step 3: Cross multiply
    18,636.18x = 27,959.13 × 6,949.50
  4. Step 4: Simplify right side
    18,636.18x = 194,301,973.94
  5. Step 5: Solve for x
    x = 194,301,973.94/18,636.18
  6. Step 6: Final answer
    x = 10,426.06

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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.