Home / 38,974.26-53,789.74-21,981.98

Finding the Fourth Proportional to 38,974.26, 53,789.74 and 21,981.98

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Solution

The fourth proportional to 38,974.26, 53,789.74 and 21,981.98 is: 30,338.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,974.26 : 53,789.74 = 21,981.98 : x
  2. Step 2: Convert to fraction form
    38,974.26/53,789.74 = 21,981.98/x
  3. Step 3: Cross multiply
    38,974.26x = 53,789.74 × 21,981.98
  4. Step 4: Simplify right side
    38,974.26x = 1,182,404,988.89
  5. Step 5: Solve for x
    x = 1,182,404,988.89/38,974.26
  6. Step 6: Final answer
    x = 30,338.10

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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.