Home / 21,576.96-29,772.72-12,143.52

Finding the Fourth Proportional to 21,576.96, 29,772.72 and 12,143.52

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Solution

The fourth proportional to 21,576.96, 29,772.72 and 12,143.52 is: 16,756.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,576.96 : 29,772.72 = 12,143.52 : x
  2. Step 2: Convert to fraction form
    21,576.96/29,772.72 = 12,143.52/x
  3. Step 3: Cross multiply
    21,576.96x = 29,772.72 × 12,143.52
  4. Step 4: Simplify right side
    21,576.96x = 361,545,620.77
  5. Step 5: Solve for x
    x = 361,545,620.77/21,576.96
  6. Step 6: Final answer
    x = 16,756.10

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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.