Home / 22,480.74-31,021.21-12,408.54

Finding the Fourth Proportional to 22,480.74, 31,021.21 and 12,408.54

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Solution

The fourth proportional to 22,480.74, 31,021.21 and 12,408.54 is: 17,122.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,480.74 : 31,021.21 = 12,408.54 : x
  2. Step 2: Convert to fraction form
    22,480.74/31,021.21 = 12,408.54/x
  3. Step 3: Cross multiply
    22,480.74x = 31,021.21 × 12,408.54
  4. Step 4: Simplify right side
    22,480.74x = 384,927,925.13
  5. Step 5: Solve for x
    x = 384,927,925.13/22,480.74
  6. Step 6: Final answer
    x = 17,122.56

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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.