Home / 38,387.89-52,974.75-21,392.85

Finding the Fourth Proportional to 38,387.89, 52,974.75 and 21,392.85

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Solution

The fourth proportional to 38,387.89, 52,974.75 and 21,392.85 is: 29,521.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,387.89 : 52,974.75 = 21,392.85 : x
  2. Step 2: Convert to fraction form
    38,387.89/52,974.75 = 21,392.85/x
  3. Step 3: Cross multiply
    38,387.89x = 52,974.75 × 21,392.85
  4. Step 4: Simplify right side
    38,387.89x = 1,133,280,880.54
  5. Step 5: Solve for x
    x = 1,133,280,880.54/38,387.89
  6. Step 6: Final answer
    x = 29,521.83

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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.