Home / 15,629.28-21,576.24-12,084.48

Finding the Fourth Proportional to 15,629.28, 21,576.24 and 12,084.48

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Solution

The fourth proportional to 15,629.28, 21,576.24 and 12,084.48 is: 16,682.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.28 : 21,576.24 = 12,084.48 : x
  2. Step 2: Convert to fraction form
    15,629.28/21,576.24 = 12,084.48/x
  3. Step 3: Cross multiply
    15,629.28x = 21,576.24 × 12,084.48
  4. Step 4: Simplify right side
    15,629.28x = 260,737,640.76
  5. Step 5: Solve for x
    x = 260,737,640.76/15,629.28
  6. Step 6: Final answer
    x = 16,682.64

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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.