Home / 35,787.12-49,379.04-21,640.80

Finding the Fourth Proportional to 35,787.12, 49,379.04 and 21,640.80

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Solution

The fourth proportional to 35,787.12, 49,379.04 and 21,640.80 is: 29,859.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,787.12 : 49,379.04 = 21,640.80 : x
  2. Step 2: Convert to fraction form
    35,787.12/49,379.04 = 21,640.80/x
  3. Step 3: Cross multiply
    35,787.12x = 49,379.04 × 21,640.80
  4. Step 4: Simplify right side
    35,787.12x = 1,068,601,928.83
  5. Step 5: Solve for x
    x = 1,068,601,928.83/35,787.12
  6. Step 6: Final answer
    x = 29,859.96

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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.