Home / 31,279.84-43,166.74-17,131.78

Finding the Fourth Proportional to 31,279.84, 43,166.74 and 17,131.78

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Solution

The fourth proportional to 31,279.84, 43,166.74 and 17,131.78 is: 23,642.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,279.84 : 43,166.74 = 17,131.78 : x
  2. Step 2: Convert to fraction form
    31,279.84/43,166.74 = 17,131.78/x
  3. Step 3: Cross multiply
    31,279.84x = 43,166.74 × 17,131.78
  4. Step 4: Simplify right side
    31,279.84x = 739,523,093.00
  5. Step 5: Solve for x
    x = 739,523,093.00/31,279.84
  6. Step 6: Final answer
    x = 23,642.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.