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Finding the Fourth Proportional to 18,621, 25,696.98 and 10,237.56

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Solution

The fourth proportional to 18,621, 25,696.98 and 10,237.56 is: 14,127.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621 : 25,696.98 = 10,237.56 : x
  2. Step 2: Convert to fraction form
    18,621/25,696.98 = 10,237.56/x
  3. Step 3: Cross multiply
    18,621x = 25,696.98 × 10,237.56
  4. Step 4: Simplify right side
    18,621x = 263,074,374.57
  5. Step 5: Solve for x
    x = 263,074,374.57/18,621
  6. Step 6: Final answer
    x = 14,127.83

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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.