Home / 21,855.48-30,107.88-17,377.80

Finding the Fourth Proportional to 21,855.48, 30,107.88 and 17,377.80

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Solution

The fourth proportional to 21,855.48, 30,107.88 and 17,377.80 is: 23,939.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,855.48 : 30,107.88 = 17,377.80 : x
  2. Step 2: Convert to fraction form
    21,855.48/30,107.88 = 17,377.80/x
  3. Step 3: Cross multiply
    21,855.48x = 30,107.88 × 17,377.80
  4. Step 4: Simplify right side
    21,855.48x = 523,208,717.06
  5. Step 5: Solve for x
    x = 523,208,717.06/21,855.48
  6. Step 6: Final answer
    x = 23,939.47

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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.