Home / 21,864.33-30,175.34-12,434.31

Finding the Fourth Proportional to 21,864.33, 30,175.34 and 12,434.31

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Solution

The fourth proportional to 21,864.33, 30,175.34 and 12,434.31 is: 17,160.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,864.33 : 30,175.34 = 12,434.31 : x
  2. Step 2: Convert to fraction form
    21,864.33/30,175.34 = 12,434.31/x
  3. Step 3: Cross multiply
    21,864.33x = 30,175.34 × 12,434.31
  4. Step 4: Simplify right side
    21,864.33x = 375,209,469.74
  5. Step 5: Solve for x
    x = 375,209,469.74/21,864.33
  6. Step 6: Final answer
    x = 17,160.80

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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.