Home / 21,942.64-30,281.07-12,511.81

Finding the Fourth Proportional to 21,942.64, 30,281.07 and 12,511.81

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Solution

The fourth proportional to 21,942.64, 30,281.07 and 12,511.81 is: 17,266.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,942.64 : 30,281.07 = 12,511.81 : x
  2. Step 2: Convert to fraction form
    21,942.64/30,281.07 = 12,511.81/x
  3. Step 3: Cross multiply
    21,942.64x = 30,281.07 × 12,511.81
  4. Step 4: Simplify right side
    21,942.64x = 378,870,994.44
  5. Step 5: Solve for x
    x = 378,870,994.44/21,942.64
  6. Step 6: Final answer
    x = 17,266.43

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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.