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Finding the Fourth Proportional to 28,489.44, 42,739.42 and 14,265.42

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Solution

The fourth proportional to 28,489.44, 42,739.42 and 14,265.42 is: 21,400.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.44 : 42,739.42 = 14,265.42 : x
  2. Step 2: Convert to fraction form
    28,489.44/42,739.42 = 14,265.42/x
  3. Step 3: Cross multiply
    28,489.44x = 42,739.42 × 14,265.42
  4. Step 4: Simplify right side
    28,489.44x = 609,695,776.86
  5. Step 5: Solve for x
    x = 609,695,776.86/28,489.44
  6. Step 6: Final answer
    x = 21,400.76

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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.