Home / 38,578.73-53,238.38-21,582.91

Finding the Fourth Proportional to 38,578.73, 53,238.38 and 21,582.91

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Solution

The fourth proportional to 38,578.73, 53,238.38 and 21,582.91 is: 29,784.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,578.73 : 53,238.38 = 21,582.91 : x
  2. Step 2: Convert to fraction form
    38,578.73/53,238.38 = 21,582.91/x
  3. Step 3: Cross multiply
    38,578.73x = 53,238.38 × 21,582.91
  4. Step 4: Simplify right side
    38,578.73x = 1,149,038,944.66
  5. Step 5: Solve for x
    x = 1,149,038,944.66/38,578.73
  6. Step 6: Final answer
    x = 29,784.26

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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.