Home / 31,142.97-46,720.61-11,421.70

Finding the Fourth Proportional to 31,142.97, 46,720.61 and 11,421.70

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Solution

The fourth proportional to 31,142.97, 46,720.61 and 11,421.70 is: 17,134.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,142.97 : 46,720.61 = 11,421.70 : x
  2. Step 2: Convert to fraction form
    31,142.97/46,720.61 = 11,421.70/x
  3. Step 3: Cross multiply
    31,142.97x = 46,720.61 × 11,421.70
  4. Step 4: Simplify right side
    31,142.97x = 533,628,906.17
  5. Step 5: Solve for x
    x = 533,628,906.17/31,142.97
  6. Step 6: Final answer
    x = 17,134.81

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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.