Home / 30,931.53-46,383.45-8,739.71

Finding the Fourth Proportional to 30,931.53, 46,383.45 and 8,739.71

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Solution

The fourth proportional to 30,931.53, 46,383.45 and 8,739.71 is: 13,105.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,931.53 : 46,383.45 = 8,739.71 : x
  2. Step 2: Convert to fraction form
    30,931.53/46,383.45 = 8,739.71/x
  3. Step 3: Cross multiply
    30,931.53x = 46,383.45 × 8,739.71
  4. Step 4: Simplify right side
    30,931.53x = 405,378,062.98
  5. Step 5: Solve for x
    x = 405,378,062.98/30,931.53
  6. Step 6: Final answer
    x = 13,105.66

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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.