Home / 22,909.56-31,615-21,028.74

Finding the Fourth Proportional to 22,909.56, 31,615 and 21,028.74

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Solution

The fourth proportional to 22,909.56, 31,615 and 21,028.74 is: 29,019.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,909.56 : 31,615 = 21,028.74 : x
  2. Step 2: Convert to fraction form
    22,909.56/31,615 = 21,028.74/x
  3. Step 3: Cross multiply
    22,909.56x = 31,615 × 21,028.74
  4. Step 4: Simplify right side
    22,909.56x = 664,823,615.10
  5. Step 5: Solve for x
    x = 664,823,615.10/22,909.56
  6. Step 6: Final answer
    x = 29,019.48

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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.