Home / 43,190.28-64,729.80-20,960.64

Finding the Fourth Proportional to 43,190.28, 64,729.80 and 20,960.64

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Solution

The fourth proportional to 43,190.28, 64,729.80 and 20,960.64 is: 31,413.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,190.28 : 64,729.80 = 20,960.64 : x
  2. Step 2: Convert to fraction form
    43,190.28/64,729.80 = 20,960.64/x
  3. Step 3: Cross multiply
    43,190.28x = 64,729.80 × 20,960.64
  4. Step 4: Simplify right side
    43,190.28x = 1,356,778,035.07
  5. Step 5: Solve for x
    x = 1,356,778,035.07/43,190.28
  6. Step 6: Final answer
    x = 31,413.97

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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.