Home / 38,974.75-53,785.23-21,069.76

Finding the Fourth Proportional to 38,974.75, 53,785.23 and 21,069.76

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Solution

The fourth proportional to 38,974.75, 53,785.23 and 21,069.76 is: 29,076.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,974.75 : 53,785.23 = 21,069.76 : x
  2. Step 2: Convert to fraction form
    38,974.75/53,785.23 = 21,069.76/x
  3. Step 3: Cross multiply
    38,974.75x = 53,785.23 × 21,069.76
  4. Step 4: Simplify right side
    38,974.75x = 1,133,241,887.64
  5. Step 5: Solve for x
    x = 1,133,241,887.64/38,974.75
  6. Step 6: Final answer
    x = 29,076.31

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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.