Home / 31,310.39-46,971.47-12,591.86

Finding the Fourth Proportional to 31,310.39, 46,971.47 and 12,591.86

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Solution

The fourth proportional to 31,310.39, 46,971.47 and 12,591.86 is: 18,890.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,310.39 : 46,971.47 = 12,591.86 : x
  2. Step 2: Convert to fraction form
    31,310.39/46,971.47 = 12,591.86/x
  3. Step 3: Cross multiply
    31,310.39x = 46,971.47 × 12,591.86
  4. Step 4: Simplify right side
    31,310.39x = 591,457,970.86
  5. Step 5: Solve for x
    x = 591,457,970.86/31,310.39
  6. Step 6: Final answer
    x = 18,890.15

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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.