Home / 38,930.79-53,724.47-21,025.80

Finding the Fourth Proportional to 38,930.79, 53,724.47 and 21,025.80

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Solution

The fourth proportional to 38,930.79, 53,724.47 and 21,025.80 is: 29,015.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,930.79 : 53,724.47 = 21,025.80 : x
  2. Step 2: Convert to fraction form
    38,930.79/53,724.47 = 21,025.80/x
  3. Step 3: Cross multiply
    38,930.79x = 53,724.47 × 21,025.80
  4. Step 4: Simplify right side
    38,930.79x = 1,129,599,961.33
  5. Step 5: Solve for x
    x = 1,129,599,961.33/38,930.79
  6. Step 6: Final answer
    x = 29,015.59

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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.