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Finding the Fourth Proportional to 18,779.52, 28,164.48 and 7,684.14

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Solution

The fourth proportional to 18,779.52, 28,164.48 and 7,684.14 is: 11,524.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.52 : 28,164.48 = 7,684.14 : x
  2. Step 2: Convert to fraction form
    18,779.52/28,164.48 = 7,684.14/x
  3. Step 3: Cross multiply
    18,779.52x = 28,164.48 × 7,684.14
  4. Step 4: Simplify right side
    18,779.52x = 216,419,807.35
  5. Step 5: Solve for x
    x = 216,419,807.35/18,779.52
  6. Step 6: Final answer
    x = 11,524.25

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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.