Home / 21,034.48-31,558.13-12,610.33

Finding the Fourth Proportional to 21,034.48, 31,558.13 and 12,610.33

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Solution

The fourth proportional to 21,034.48, 31,558.13 and 12,610.33 is: 18,919.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,034.48 : 31,558.13 = 12,610.33 : x
  2. Step 2: Convert to fraction form
    21,034.48/31,558.13 = 12,610.33/x
  3. Step 3: Cross multiply
    21,034.48x = 31,558.13 × 12,610.33
  4. Step 4: Simplify right side
    21,034.48x = 397,958,584.28
  5. Step 5: Solve for x
    x = 397,958,584.28/21,034.48
  6. Step 6: Final answer
    x = 18,919.35

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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.