Home / 39,695.42-54,776.67-21,787.58

Finding the Fourth Proportional to 39,695.42, 54,776.67 and 21,787.58

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Solution

The fourth proportional to 39,695.42, 54,776.67 and 21,787.58 is: 30,065.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,695.42 : 54,776.67 = 21,787.58 : x
  2. Step 2: Convert to fraction form
    39,695.42/54,776.67 = 21,787.58/x
  3. Step 3: Cross multiply
    39,695.42x = 54,776.67 × 21,787.58
  4. Step 4: Simplify right side
    39,695.42x = 1,193,451,079.76
  5. Step 5: Solve for x
    x = 1,193,451,079.76/39,695.42
  6. Step 6: Final answer
    x = 30,065.21

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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.