Home / 20,947.74-31,413.30-9,252.75

Finding the Fourth Proportional to 20,947.74, 31,413.30 and 9,252.75

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Solution

The fourth proportional to 20,947.74, 31,413.30 and 9,252.75 is: 13,875.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.74 : 31,413.30 = 9,252.75 : x
  2. Step 2: Convert to fraction form
    20,947.74/31,413.30 = 9,252.75/x
  3. Step 3: Cross multiply
    20,947.74x = 31,413.30 × 9,252.75
  4. Step 4: Simplify right side
    20,947.74x = 290,659,411.58
  5. Step 5: Solve for x
    x = 290,659,411.58/20,947.74
  6. Step 6: Final answer
    x = 13,875.45

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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.