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Finding the Fourth Proportional to 18,955, 26,157.34 and 10,996.68

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Solution

The fourth proportional to 18,955, 26,157.34 and 10,996.68 is: 15,175.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,955 : 26,157.34 = 10,996.68 : x
  2. Step 2: Convert to fraction form
    18,955/26,157.34 = 10,996.68/x
  3. Step 3: Cross multiply
    18,955x = 26,157.34 × 10,996.68
  4. Step 4: Simplify right side
    18,955x = 287,643,897.63
  5. Step 5: Solve for x
    x = 287,643,897.63/18,955
  6. Step 6: Final answer
    x = 15,175.09

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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.