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Finding the Fourth Proportional to 18,861.37, 26,025.80 and 10,902.06

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Solution

The fourth proportional to 18,861.37, 26,025.80 and 10,902.06 is: 15,043.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861.37 : 26,025.80 = 10,902.06 : x
  2. Step 2: Convert to fraction form
    18,861.37/26,025.80 = 10,902.06/x
  3. Step 3: Cross multiply
    18,861.37x = 26,025.80 × 10,902.06
  4. Step 4: Simplify right side
    18,861.37x = 283,734,833.15
  5. Step 5: Solve for x
    x = 283,734,833.15/18,861.37
  6. Step 6: Final answer
    x = 15,043.17

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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.