Home / 22,405.80-30,919.86-12,333.72

Finding the Fourth Proportional to 22,405.80, 30,919.86 and 12,333.72

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Solution

The fourth proportional to 22,405.80, 30,919.86 and 12,333.72 is: 17,020.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,405.80 : 30,919.86 = 12,333.72 : x
  2. Step 2: Convert to fraction form
    22,405.80/30,919.86 = 12,333.72/x
  3. Step 3: Cross multiply
    22,405.80x = 30,919.86 × 12,333.72
  4. Step 4: Simplify right side
    22,405.80x = 381,356,895.68
  5. Step 5: Solve for x
    x = 381,356,895.68/22,405.80
  6. Step 6: Final answer
    x = 17,020.45

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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.