Home / 31,989.76-47,991.66-9,804.81

Finding the Fourth Proportional to 31,989.76, 47,991.66 and 9,804.81

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Solution

The fourth proportional to 31,989.76, 47,991.66 and 9,804.81 is: 14,709.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,989.76 : 47,991.66 = 9,804.81 : x
  2. Step 2: Convert to fraction form
    31,989.76/47,991.66 = 9,804.81/x
  3. Step 3: Cross multiply
    31,989.76x = 47,991.66 × 9,804.81
  4. Step 4: Simplify right side
    31,989.76x = 470,548,867.93
  5. Step 5: Solve for x
    x = 470,548,867.93/31,989.76
  6. Step 6: Final answer
    x = 14,709.36

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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.