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Finding the Fourth Proportional to 21,393.44, 32,088.72 and 7,540.64

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Solution

The fourth proportional to 21,393.44, 32,088.72 and 7,540.64 is: 11,310.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,393.44 : 32,088.72 = 7,540.64 : x
  2. Step 2: Convert to fraction form
    21,393.44/32,088.72 = 7,540.64/x
  3. Step 3: Cross multiply
    21,393.44x = 32,088.72 × 7,540.64
  4. Step 4: Simplify right side
    21,393.44x = 241,969,485.58
  5. Step 5: Solve for x
    x = 241,969,485.58/21,393.44
  6. Step 6: Final answer
    x = 11,310.45

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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.