Home / 38,381.89-52,970.05-21,157.32

Finding the Fourth Proportional to 38,381.89, 52,970.05 and 21,157.32

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Solution

The fourth proportional to 38,381.89, 52,970.05 and 21,157.32 is: 29,198.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,381.89 : 52,970.05 = 21,157.32 : x
  2. Step 2: Convert to fraction form
    38,381.89/52,970.05 = 21,157.32/x
  3. Step 3: Cross multiply
    38,381.89x = 52,970.05 × 21,157.32
  4. Step 4: Simplify right side
    38,381.89x = 1,120,704,169.53
  5. Step 5: Solve for x
    x = 1,120,704,169.53/38,381.89
  6. Step 6: Final answer
    x = 29,198.78

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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.