Home / 22,480.40-31,022.78-12,408.85

Finding the Fourth Proportional to 22,480.40, 31,022.78 and 12,408.85

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Solution

The fourth proportional to 22,480.40, 31,022.78 and 12,408.85 is: 17,124.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,480.40 : 31,022.78 = 12,408.85 : x
  2. Step 2: Convert to fraction form
    22,480.40/31,022.78 = 12,408.85/x
  3. Step 3: Cross multiply
    22,480.40x = 31,022.78 × 12,408.85
  4. Step 4: Simplify right side
    22,480.40x = 384,956,895.63
  5. Step 5: Solve for x
    x = 384,956,895.63/22,480.40
  6. Step 6: Final answer
    x = 17,124.11

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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.