Home / 38,786.91-53,522.77-21,790.23

Finding the Fourth Proportional to 38,786.91, 53,522.77 and 21,790.23

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Solution

The fourth proportional to 38,786.91, 53,522.77 and 21,790.23 is: 30,068.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,786.91 : 53,522.77 = 21,790.23 : x
  2. Step 2: Convert to fraction form
    38,786.91/53,522.77 = 21,790.23/x
  3. Step 3: Cross multiply
    38,786.91x = 53,522.77 × 21,790.23
  4. Step 4: Simplify right side
    38,786.91x = 1,166,273,468.54
  5. Step 5: Solve for x
    x = 1,166,273,468.54/38,786.91
  6. Step 6: Final answer
    x = 30,068.74

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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.