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Finding the Fourth Proportional to 18,865.78, 26,035.29 and 10,368.41

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Solution

The fourth proportional to 18,865.78, 26,035.29 and 10,368.41 is: 14,308.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.78 : 26,035.29 = 10,368.41 : x
  2. Step 2: Convert to fraction form
    18,865.78/26,035.29 = 10,368.41/x
  3. Step 3: Cross multiply
    18,865.78x = 26,035.29 × 10,368.41
  4. Step 4: Simplify right side
    18,865.78x = 269,944,431.01
  5. Step 5: Solve for x
    x = 269,944,431.01/18,865.78
  6. Step 6: Final answer
    x = 14,308.68

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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.