Home / 38,679.45-53,380.88-21,683.41

Finding the Fourth Proportional to 38,679.45, 53,380.88 and 21,683.41

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Solution

The fourth proportional to 38,679.45, 53,380.88 and 21,683.41 is: 29,924.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,679.45 : 53,380.88 = 21,683.41 : x
  2. Step 2: Convert to fraction form
    38,679.45/53,380.88 = 21,683.41/x
  3. Step 3: Cross multiply
    38,679.45x = 53,380.88 × 21,683.41
  4. Step 4: Simplify right side
    38,679.45x = 1,157,479,507.20
  5. Step 5: Solve for x
    x = 1,157,479,507.20/38,679.45
  6. Step 6: Final answer
    x = 29,924.92

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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.