Home / 31,445.72-43,413.01-20,849.68

Finding the Fourth Proportional to 31,445.72, 43,413.01 and 20,849.68

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Solution

The fourth proportional to 31,445.72, 43,413.01 and 20,849.68 is: 28,784.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,445.72 : 43,413.01 = 20,849.68 : x
  2. Step 2: Convert to fraction form
    31,445.72/43,413.01 = 20,849.68/x
  3. Step 3: Cross multiply
    31,445.72x = 43,413.01 × 20,849.68
  4. Step 4: Simplify right side
    31,445.72x = 905,147,366.34
  5. Step 5: Solve for x
    x = 905,147,366.34/31,445.72
  6. Step 6: Final answer
    x = 28,784.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.