Home / 31,721.13-43,776.99-17,380.99

Finding the Fourth Proportional to 31,721.13, 43,776.99 and 17,380.99

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Solution

The fourth proportional to 31,721.13, 43,776.99 and 17,380.99 is: 23,986.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,721.13 : 43,776.99 = 17,380.99 : x
  2. Step 2: Convert to fraction form
    31,721.13/43,776.99 = 17,380.99/x
  3. Step 3: Cross multiply
    31,721.13x = 43,776.99 × 17,380.99
  4. Step 4: Simplify right side
    31,721.13x = 760,887,206.54
  5. Step 5: Solve for x
    x = 760,887,206.54/31,721.13
  6. Step 6: Final answer
    x = 23,986.77

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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.