Home / 22,015.78-30,381.78-12,584.55

Finding the Fourth Proportional to 22,015.78, 30,381.78 and 12,584.55

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Solution

The fourth proportional to 22,015.78, 30,381.78 and 12,584.55 is: 17,366.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,015.78 : 30,381.78 = 12,584.55 : x
  2. Step 2: Convert to fraction form
    22,015.78/30,381.78 = 12,584.55/x
  3. Step 3: Cross multiply
    22,015.78x = 30,381.78 × 12,584.55
  4. Step 4: Simplify right side
    22,015.78x = 382,341,029.50
  5. Step 5: Solve for x
    x = 382,341,029.50/22,015.78
  6. Step 6: Final answer
    x = 17,366.68

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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.