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Finding the Fourth Proportional to 18,681.58, 28,023.97 and 5,354.62

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Solution

The fourth proportional to 18,681.58, 28,023.97 and 5,354.62 is: 8,032.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.58 : 28,023.97 = 5,354.62 : x
  2. Step 2: Convert to fraction form
    18,681.58/28,023.97 = 5,354.62/x
  3. Step 3: Cross multiply
    18,681.58x = 28,023.97 × 5,354.62
  4. Step 4: Simplify right side
    18,681.58x = 150,057,710.24
  5. Step 5: Solve for x
    x = 150,057,710.24/18,681.58
  6. Step 6: Final answer
    x = 8,032.39

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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.