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Finding the Fourth Proportional to 8,999.96, 13,500.06 and 3,156.74

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Solution

The fourth proportional to 8,999.96, 13,500.06 and 3,156.74 is: 4,735.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,999.96 : 13,500.06 = 3,156.74 : x
  2. Step 2: Convert to fraction form
    8,999.96/13,500.06 = 3,156.74/x
  3. Step 3: Cross multiply
    8,999.96x = 13,500.06 × 3,156.74
  4. Step 4: Simplify right side
    8,999.96x = 42,616,096.12
  5. Step 5: Solve for x
    x = 42,616,096.12/8,999.96
  6. Step 6: Final answer
    x = 4,735.15

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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.