Home / 38,907.64-53,694.34-21,917.28

Finding the Fourth Proportional to 38,907.64, 53,694.34 and 21,917.28

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Solution

The fourth proportional to 38,907.64, 53,694.34 and 21,917.28 is: 30,246.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,907.64 : 53,694.34 = 21,917.28 : x
  2. Step 2: Convert to fraction form
    38,907.64/53,694.34 = 21,917.28/x
  3. Step 3: Cross multiply
    38,907.64x = 53,694.34 × 21,917.28
  4. Step 4: Simplify right side
    38,907.64x = 1,176,834,154.04
  5. Step 5: Solve for x
    x = 1,176,834,154.04/38,907.64
  6. Step 6: Final answer
    x = 30,246.86

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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.