Home / 38,490.91-53,114.42-21,493.82

Finding the Fourth Proportional to 38,490.91, 53,114.42 and 21,493.82

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Solution

The fourth proportional to 38,490.91, 53,114.42 and 21,493.82 is: 29,659.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,490.91 : 53,114.42 = 21,493.82 : x
  2. Step 2: Convert to fraction form
    38,490.91/53,114.42 = 21,493.82/x
  3. Step 3: Cross multiply
    38,490.91x = 53,114.42 × 21,493.82
  4. Step 4: Simplify right side
    38,490.91x = 1,141,631,969.41
  5. Step 5: Solve for x
    x = 1,141,631,969.41/38,490.91
  6. Step 6: Final answer
    x = 29,659.78

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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.