Home / 22,420.41-30,940.16-12,994.44

Finding the Fourth Proportional to 22,420.41, 30,940.16 and 12,994.44

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Solution

The fourth proportional to 22,420.41, 30,940.16 and 12,994.44 is: 17,932.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,420.41 : 30,940.16 = 12,994.44 : x
  2. Step 2: Convert to fraction form
    22,420.41/30,940.16 = 12,994.44/x
  3. Step 3: Cross multiply
    22,420.41x = 30,940.16 × 12,994.44
  4. Step 4: Simplify right side
    22,420.41x = 402,049,944.81
  5. Step 5: Solve for x
    x = 402,049,944.81/22,420.41
  6. Step 6: Final answer
    x = 17,932.32

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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.