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Finding the Fourth Proportional to 28,046.39, 42,055.53 and 9,319.86

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Solution

The fourth proportional to 28,046.39, 42,055.53 and 9,319.86 is: 13,975.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,046.39 : 42,055.53 = 9,319.86 : x
  2. Step 2: Convert to fraction form
    28,046.39/42,055.53 = 9,319.86/x
  3. Step 3: Cross multiply
    28,046.39x = 42,055.53 × 9,319.86
  4. Step 4: Simplify right side
    28,046.39x = 391,951,651.83
  5. Step 5: Solve for x
    x = 391,951,651.83/28,046.39
  6. Step 6: Final answer
    x = 13,975.12

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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.