Home / 38,665.12-53,361.62-21,672.24

Finding the Fourth Proportional to 38,665.12, 53,361.62 and 21,672.24

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Solution

The fourth proportional to 38,665.12, 53,361.62 and 21,672.24 is: 29,909.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,665.12 : 53,361.62 = 21,672.24 : x
  2. Step 2: Convert to fraction form
    38,665.12/53,361.62 = 21,672.24/x
  3. Step 3: Cross multiply
    38,665.12x = 53,361.62 × 21,672.24
  4. Step 4: Simplify right side
    38,665.12x = 1,156,465,835.43
  5. Step 5: Solve for x
    x = 1,156,465,835.43/38,665.12
  6. Step 6: Final answer
    x = 29,909.80

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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.