Home / 31,644.91-43,660.11-21,036.34

Finding the Fourth Proportional to 31,644.91, 43,660.11 and 21,036.34

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Solution

The fourth proportional to 31,644.91, 43,660.11 and 21,036.34 is: 29,023.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,644.91 : 43,660.11 = 21,036.34 : x
  2. Step 2: Convert to fraction form
    31,644.91/43,660.11 = 21,036.34/x
  3. Step 3: Cross multiply
    31,644.91x = 43,660.11 × 21,036.34
  4. Step 4: Simplify right side
    31,644.91x = 918,448,918.40
  5. Step 5: Solve for x
    x = 918,448,918.40/31,644.91
  6. Step 6: Final answer
    x = 29,023.59

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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.