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Finding the Fourth Proportional to 18,396, 25,386.48 and 10,012.56

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Solution

The fourth proportional to 18,396, 25,386.48 and 10,012.56 is: 13,817.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396 : 25,386.48 = 10,012.56 : x
  2. Step 2: Convert to fraction form
    18,396/25,386.48 = 10,012.56/x
  3. Step 3: Cross multiply
    18,396x = 25,386.48 × 10,012.56
  4. Step 4: Simplify right side
    18,396x = 254,183,654.19
  5. Step 5: Solve for x
    x = 254,183,654.19/18,396
  6. Step 6: Final answer
    x = 13,817.33

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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.