Home / 38,878.70-53,656.92-21,883.46

Finding the Fourth Proportional to 38,878.70, 53,656.92 and 21,883.46

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Solution

The fourth proportional to 38,878.70, 53,656.92 and 21,883.46 is: 30,201.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,878.70 : 53,656.92 = 21,883.46 : x
  2. Step 2: Convert to fraction form
    38,878.70/53,656.92 = 21,883.46/x
  3. Step 3: Cross multiply
    38,878.70x = 53,656.92 × 21,883.46
  4. Step 4: Simplify right side
    38,878.70x = 1,174,198,794.26
  5. Step 5: Solve for x
    x = 1,174,198,794.26/38,878.70
  6. Step 6: Final answer
    x = 30,201.60

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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.