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Finding the Fourth Proportional to 28,951.52, 43,413.39 and 14,143.10

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Solution

The fourth proportional to 28,951.52, 43,413.39 and 14,143.10 is: 21,207.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,951.52 : 43,413.39 = 14,143.10 : x
  2. Step 2: Convert to fraction form
    28,951.52/43,413.39 = 14,143.10/x
  3. Step 3: Cross multiply
    28,951.52x = 43,413.39 × 14,143.10
  4. Step 4: Simplify right side
    28,951.52x = 613,999,699.04
  5. Step 5: Solve for x
    x = 613,999,699.04/28,951.52
  6. Step 6: Final answer
    x = 21,207.86

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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.