Home / 22,303.09-30,772.83-12,871.63

Finding the Fourth Proportional to 22,303.09, 30,772.83 and 12,871.63

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Solution

The fourth proportional to 22,303.09, 30,772.83 and 12,871.63 is: 17,759.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,303.09 : 30,772.83 = 12,871.63 : x
  2. Step 2: Convert to fraction form
    22,303.09/30,772.83 = 12,871.63/x
  3. Step 3: Cross multiply
    22,303.09x = 30,772.83 × 12,871.63
  4. Step 4: Simplify right side
    22,303.09x = 396,096,481.81
  5. Step 5: Solve for x
    x = 396,096,481.81/22,303.09
  6. Step 6: Final answer
    x = 17,759.71

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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.