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Finding the Fourth Proportional to 12,652.15, 18,962.83 and 8,955.45

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Solution

The fourth proportional to 12,652.15, 18,962.83 and 8,955.45 is: 13,422.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,652.15 : 18,962.83 = 8,955.45 : x
  2. Step 2: Convert to fraction form
    12,652.15/18,962.83 = 8,955.45/x
  3. Step 3: Cross multiply
    12,652.15x = 18,962.83 × 8,955.45
  4. Step 4: Simplify right side
    12,652.15x = 169,820,675.92
  5. Step 5: Solve for x
    x = 169,820,675.92/12,652.15
  6. Step 6: Final answer
    x = 13,422.28

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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.