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Finding the Fourth Proportional to 18,511.80, 27,772.02 and 5,364.42

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Solution

The fourth proportional to 18,511.80, 27,772.02 and 5,364.42 is: 8,047.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,511.80 : 27,772.02 = 5,364.42 : x
  2. Step 2: Convert to fraction form
    18,511.80/27,772.02 = 5,364.42/x
  3. Step 3: Cross multiply
    18,511.80x = 27,772.02 × 5,364.42
  4. Step 4: Simplify right side
    18,511.80x = 148,980,779.53
  5. Step 5: Solve for x
    x = 148,980,779.53/18,511.80
  6. Step 6: Final answer
    x = 8,047.88

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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.