Home / 38,890.15-53,667.52-21,662.39

Finding the Fourth Proportional to 38,890.15, 53,667.52 and 21,662.39

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Solution

The fourth proportional to 38,890.15, 53,667.52 and 21,662.39 is: 29,893.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,890.15 : 53,667.52 = 21,662.39 : x
  2. Step 2: Convert to fraction form
    38,890.15/53,667.52 = 21,662.39/x
  3. Step 3: Cross multiply
    38,890.15x = 53,667.52 × 21,662.39
  4. Step 4: Simplify right side
    38,890.15x = 1,162,566,828.59
  5. Step 5: Solve for x
    x = 1,162,566,828.59/38,890.15
  6. Step 6: Final answer
    x = 29,893.61

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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.