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Finding the Fourth Proportional to 18,367.50, 27,531.98 and 7,699.95

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Solution

The fourth proportional to 18,367.50, 27,531.98 and 7,699.95 is: 11,541.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,367.50 : 27,531.98 = 7,699.95 : x
  2. Step 2: Convert to fraction form
    18,367.50/27,531.98 = 7,699.95/x
  3. Step 3: Cross multiply
    18,367.50x = 27,531.98 × 7,699.95
  4. Step 4: Simplify right side
    18,367.50x = 211,994,869.40
  5. Step 5: Solve for x
    x = 211,994,869.40/18,367.50
  6. Step 6: Final answer
    x = 11,541.85

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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.