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Finding the Fourth Proportional to 18,900.34, 26,080.94 and 10,943.07

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Solution

The fourth proportional to 18,900.34, 26,080.94 and 10,943.07 is: 15,100.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.34 : 26,080.94 = 10,943.07 : x
  2. Step 2: Convert to fraction form
    18,900.34/26,080.94 = 10,943.07/x
  3. Step 3: Cross multiply
    18,900.34x = 26,080.94 × 10,943.07
  4. Step 4: Simplify right side
    18,900.34x = 285,405,420.09
  5. Step 5: Solve for x
    x = 285,405,420.09/18,900.34
  6. Step 6: Final answer
    x = 15,100.55

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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.