Home / 38,570.19-53,231.79-21,575.39

Finding the Fourth Proportional to 38,570.19, 53,231.79 and 21,575.39

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Solution

The fourth proportional to 38,570.19, 53,231.79 and 21,575.39 is: 29,776.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,570.19 : 53,231.79 = 21,575.39 : x
  2. Step 2: Convert to fraction form
    38,570.19/53,231.79 = 21,575.39/x
  3. Step 3: Cross multiply
    38,570.19x = 53,231.79 × 21,575.39
  4. Step 4: Simplify right side
    38,570.19x = 1,148,496,363.49
  5. Step 5: Solve for x
    x = 1,148,496,363.49/38,570.19
  6. Step 6: Final answer
    x = 29,776.79

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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.