Home / 27,822.72-38,432.16-20,736.84

Finding the Fourth Proportional to 27,822.72, 38,432.16 and 20,736.84

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Solution

The fourth proportional to 27,822.72, 38,432.16 and 20,736.84 is: 28,644.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,822.72 : 38,432.16 = 20,736.84 : x
  2. Step 2: Convert to fraction form
    27,822.72/38,432.16 = 20,736.84/x
  3. Step 3: Cross multiply
    27,822.72x = 38,432.16 × 20,736.84
  4. Step 4: Simplify right side
    27,822.72x = 796,961,552.77
  5. Step 5: Solve for x
    x = 796,961,552.77/27,822.72
  6. Step 6: Final answer
    x = 28,644.27

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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.