Home / 21,934.38-30,239.82-18,943.86

Finding the Fourth Proportional to 21,934.38, 30,239.82 and 18,943.86

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Solution

The fourth proportional to 21,934.38, 30,239.82 and 18,943.86 is: 26,116.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,934.38 : 30,239.82 = 18,943.86 : x
  2. Step 2: Convert to fraction form
    21,934.38/30,239.82 = 18,943.86/x
  3. Step 3: Cross multiply
    21,934.38x = 30,239.82 × 18,943.86
  4. Step 4: Simplify right side
    21,934.38x = 572,858,916.51
  5. Step 5: Solve for x
    x = 572,858,916.51/21,934.38
  6. Step 6: Final answer
    x = 26,116.94

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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.