Home / 38,682.32-53,386.44-21,920.72

Finding the Fourth Proportional to 38,682.32, 53,386.44 and 21,920.72

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Solution

The fourth proportional to 38,682.32, 53,386.44 and 21,920.72 is: 30,253.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,682.32 : 53,386.44 = 21,920.72 : x
  2. Step 2: Convert to fraction form
    38,682.32/53,386.44 = 21,920.72/x
  3. Step 3: Cross multiply
    38,682.32x = 53,386.44 × 21,920.72
  4. Step 4: Simplify right side
    38,682.32x = 1,170,269,203.04
  5. Step 5: Solve for x
    x = 1,170,269,203.04/38,682.32
  6. Step 6: Final answer
    x = 30,253.34

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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.