Home / 31,315.13-46,961.03-12,588.86

Finding the Fourth Proportional to 31,315.13, 46,961.03 and 12,588.86

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Solution

The fourth proportional to 31,315.13, 46,961.03 and 12,588.86 is: 18,878.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,315.13 : 46,961.03 = 12,588.86 : x
  2. Step 2: Convert to fraction form
    31,315.13/46,961.03 = 12,588.86/x
  3. Step 3: Cross multiply
    31,315.13x = 46,961.03 × 12,588.86
  4. Step 4: Simplify right side
    31,315.13x = 591,185,981.00
  5. Step 5: Solve for x
    x = 591,185,981.00/31,315.13
  6. Step 6: Final answer
    x = 18,878.61

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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.