Home / 38,454.80-57,682.20-19,792.40

Finding the Fourth Proportional to 38,454.80, 57,682.20 and 19,792.40

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Solution

The fourth proportional to 38,454.80, 57,682.20 and 19,792.40 is: 29,688.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,454.80 : 57,682.20 = 19,792.40 : x
  2. Step 2: Convert to fraction form
    38,454.80/57,682.20 = 19,792.40/x
  3. Step 3: Cross multiply
    38,454.80x = 57,682.20 × 19,792.40
  4. Step 4: Simplify right side
    38,454.80x = 1,141,669,175.28
  5. Step 5: Solve for x
    x = 1,141,669,175.28/38,454.80
  6. Step 6: Final answer
    x = 29,688.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.