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Finding the Fourth Proportional to 20,672.64, 31,013.64 and 7,525.08

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Solution

The fourth proportional to 20,672.64, 31,013.64 and 7,525.08 is: 11,289.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.64 : 31,013.64 = 7,525.08 : x
  2. Step 2: Convert to fraction form
    20,672.64/31,013.64 = 7,525.08/x
  3. Step 3: Cross multiply
    20,672.64x = 31,013.64 × 7,525.08
  4. Step 4: Simplify right side
    20,672.64x = 233,380,122.09
  5. Step 5: Solve for x
    x = 233,380,122.09/20,672.64
  6. Step 6: Final answer
    x = 11,289.32

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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.