Home / 21,620.60-29,823-16,576.64

Finding the Fourth Proportional to 21,620.60, 29,823 and 16,576.64

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Solution

The fourth proportional to 21,620.60, 29,823 and 16,576.64 is: 22,865.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,620.60 : 29,823 = 16,576.64 : x
  2. Step 2: Convert to fraction form
    21,620.60/29,823 = 16,576.64/x
  3. Step 3: Cross multiply
    21,620.60x = 29,823 × 16,576.64
  4. Step 4: Simplify right side
    21,620.60x = 494,365,134.72
  5. Step 5: Solve for x
    x = 494,365,134.72/21,620.60
  6. Step 6: Final answer
    x = 22,865.47

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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.