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Finding the Fourth Proportional to 32,447.64, 48,648.96 and 12,728.20

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Solution

The fourth proportional to 32,447.64, 48,648.96 and 12,728.20 is: 19,083.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,447.64 : 48,648.96 = 12,728.20 : x
  2. Step 2: Convert to fraction form
    32,447.64/48,648.96 = 12,728.20/x
  3. Step 3: Cross multiply
    32,447.64x = 48,648.96 × 12,728.20
  4. Step 4: Simplify right side
    32,447.64x = 619,213,692.67
  5. Step 5: Solve for x
    x = 619,213,692.67/32,447.64
  6. Step 6: Final answer
    x = 19,083.47

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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.