Home / 20,957.48-31,436.30-19,906.36

Finding the Fourth Proportional to 20,957.48, 31,436.30 and 19,906.36

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Solution

The fourth proportional to 20,957.48, 31,436.30 and 19,906.36 is: 29,859.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,957.48 : 31,436.30 = 19,906.36 : x
  2. Step 2: Convert to fraction form
    20,957.48/31,436.30 = 19,906.36/x
  3. Step 3: Cross multiply
    20,957.48x = 31,436.30 × 19,906.36
  4. Step 4: Simplify right side
    20,957.48x = 625,782,276.04
  5. Step 5: Solve for x
    x = 625,782,276.04/20,957.48
  6. Step 6: Final answer
    x = 29,859.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.