Home / 21,576.20-32,368.92-12,220.64

Finding the Fourth Proportional to 21,576.20, 32,368.92 and 12,220.64

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Solution

The fourth proportional to 21,576.20, 32,368.92 and 12,220.64 is: 18,333.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,576.20 : 32,368.92 = 12,220.64 : x
  2. Step 2: Convert to fraction form
    21,576.20/32,368.92 = 12,220.64/x
  3. Step 3: Cross multiply
    21,576.20x = 32,368.92 × 12,220.64
  4. Step 4: Simplify right side
    21,576.20x = 395,568,918.51
  5. Step 5: Solve for x
    x = 395,568,918.51/21,576.20
  6. Step 6: Final answer
    x = 18,333.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.