Home / 38,511.90-53,144.52-21,512.77

Finding the Fourth Proportional to 38,511.90, 53,144.52 and 21,512.77

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Solution

The fourth proportional to 38,511.90, 53,144.52 and 21,512.77 is: 29,686.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,511.90 : 53,144.52 = 21,512.77 : x
  2. Step 2: Convert to fraction form
    38,511.90/53,144.52 = 21,512.77/x
  3. Step 3: Cross multiply
    38,511.90x = 53,144.52 × 21,512.77
  4. Step 4: Simplify right side
    38,511.90x = 1,143,285,835.52
  5. Step 5: Solve for x
    x = 1,143,285,835.52/38,511.90
  6. Step 6: Final answer
    x = 29,686.56

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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.