Home / 31,722.13-43,778.37-17,381.99

Finding the Fourth Proportional to 31,722.13, 43,778.37 and 17,381.99

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Solution

The fourth proportional to 31,722.13, 43,778.37 and 17,381.99 is: 23,988.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,722.13 : 43,778.37 = 17,381.99 : x
  2. Step 2: Convert to fraction form
    31,722.13/43,778.37 = 17,381.99/x
  3. Step 3: Cross multiply
    31,722.13x = 43,778.37 × 17,381.99
  4. Step 4: Simplify right side
    31,722.13x = 760,955,189.56
  5. Step 5: Solve for x
    x = 760,955,189.56/31,722.13
  6. Step 6: Final answer
    x = 23,988.15

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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.