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Finding the Fourth Proportional to 30,432.64, 45,648.69 and 8,248.30

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Solution

The fourth proportional to 30,432.64, 45,648.69 and 8,248.30 is: 12,372.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,432.64 : 45,648.69 = 8,248.30 : x
  2. Step 2: Convert to fraction form
    30,432.64/45,648.69 = 8,248.30/x
  3. Step 3: Cross multiply
    30,432.64x = 45,648.69 × 8,248.30
  4. Step 4: Simplify right side
    30,432.64x = 376,524,089.73
  5. Step 5: Solve for x
    x = 376,524,089.73/30,432.64
  6. Step 6: Final answer
    x = 12,372.38

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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.