Home / 27,983.38-38,590.44-21,599.78

Finding the Fourth Proportional to 27,983.38, 38,590.44 and 21,599.78

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Solution

The fourth proportional to 27,983.38, 38,590.44 and 21,599.78 is: 29,787.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,983.38 : 38,590.44 = 21,599.78 : x
  2. Step 2: Convert to fraction form
    27,983.38/38,590.44 = 21,599.78/x
  3. Step 3: Cross multiply
    27,983.38x = 38,590.44 × 21,599.78
  4. Step 4: Simplify right side
    27,983.38x = 833,545,014.10
  5. Step 5: Solve for x
    x = 833,545,014.10/27,983.38
  6. Step 6: Final answer
    x = 29,787.15

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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.