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Finding the Fourth Proportional to 31,644.88, 47,464.08 and 8,268.28

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Solution

The fourth proportional to 31,644.88, 47,464.08 and 8,268.28 is: 12,401.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,644.88 : 47,464.08 = 8,268.28 : x
  2. Step 2: Convert to fraction form
    31,644.88/47,464.08 = 8,268.28/x
  3. Step 3: Cross multiply
    31,644.88x = 47,464.08 × 8,268.28
  4. Step 4: Simplify right side
    31,644.88x = 392,446,303.38
  5. Step 5: Solve for x
    x = 392,446,303.38/31,644.88
  6. Step 6: Final answer
    x = 12,401.57

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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.