Home / 38,517.45-53,153.10-21,521.79

Finding the Fourth Proportional to 38,517.45, 53,153.10 and 21,521.79

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Solution

The fourth proportional to 38,517.45, 53,153.10 and 21,521.79 is: 29,699.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,517.45 : 53,153.10 = 21,521.79 : x
  2. Step 2: Convert to fraction form
    38,517.45/53,153.10 = 21,521.79/x
  3. Step 3: Cross multiply
    38,517.45x = 53,153.10 × 21,521.79
  4. Step 4: Simplify right side
    38,517.45x = 1,143,949,856.05
  5. Step 5: Solve for x
    x = 1,143,949,856.05/38,517.45
  6. Step 6: Final answer
    x = 29,699.52

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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.