Home / 38,642.48-53,328.62-21,645.73

Finding the Fourth Proportional to 38,642.48, 53,328.62 and 21,645.73

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Solution

The fourth proportional to 38,642.48, 53,328.62 and 21,645.73 is: 29,872.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,642.48 : 53,328.62 = 21,645.73 : x
  2. Step 2: Convert to fraction form
    38,642.48/53,328.62 = 21,645.73/x
  3. Step 3: Cross multiply
    38,642.48x = 53,328.62 × 21,645.73
  4. Step 4: Simplify right side
    38,642.48x = 1,154,336,909.79
  5. Step 5: Solve for x
    x = 1,154,336,909.79/38,642.48
  6. Step 6: Final answer
    x = 29,872.23

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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.