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Finding the Fourth Proportional to 13,153.08, 18,156.39 and 8,902.08

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Solution

The fourth proportional to 13,153.08, 18,156.39 and 8,902.08 is: 12,288.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.08 : 18,156.39 = 8,902.08 : x
  2. Step 2: Convert to fraction form
    13,153.08/18,156.39 = 8,902.08/x
  3. Step 3: Cross multiply
    13,153.08x = 18,156.39 × 8,902.08
  4. Step 4: Simplify right side
    13,153.08x = 161,629,636.29
  5. Step 5: Solve for x
    x = 161,629,636.29/13,153.08
  6. Step 6: Final answer
    x = 12,288.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.