Home / 38,636.12-53,314.26-21,869.12

Finding the Fourth Proportional to 38,636.12, 53,314.26 and 21,869.12

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Solution

The fourth proportional to 38,636.12, 53,314.26 and 21,869.12 is: 30,177.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,636.12 : 53,314.26 = 21,869.12 : x
  2. Step 2: Convert to fraction form
    38,636.12/53,314.26 = 21,869.12/x
  3. Step 3: Cross multiply
    38,636.12x = 53,314.26 × 21,869.12
  4. Step 4: Simplify right side
    38,636.12x = 1,165,935,949.65
  5. Step 5: Solve for x
    x = 1,165,935,949.65/38,636.12
  6. Step 6: Final answer
    x = 30,177.36

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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.