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Finding the Fourth Proportional to 30,672.56, 46,009.93 and 8,487.61

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Solution

The fourth proportional to 30,672.56, 46,009.93 and 8,487.61 is: 12,731.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,672.56 : 46,009.93 = 8,487.61 : x
  2. Step 2: Convert to fraction form
    30,672.56/46,009.93 = 8,487.61/x
  3. Step 3: Cross multiply
    30,672.56x = 46,009.93 × 8,487.61
  4. Step 4: Simplify right side
    30,672.56x = 390,514,205.72
  5. Step 5: Solve for x
    x = 390,514,205.72/30,672.56
  6. Step 6: Final answer
    x = 12,731.71

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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.