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Finding the Fourth Proportional to 18,427, 25,429.26 and 10,043.56

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Solution

The fourth proportional to 18,427, 25,429.26 and 10,043.56 is: 13,860.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,427 : 25,429.26 = 10,043.56 : x
  2. Step 2: Convert to fraction form
    18,427/25,429.26 = 10,043.56/x
  3. Step 3: Cross multiply
    18,427x = 25,429.26 × 10,043.56
  4. Step 4: Simplify right side
    18,427x = 255,400,298.57
  5. Step 5: Solve for x
    x = 255,400,298.57/18,427
  6. Step 6: Final answer
    x = 13,860.11

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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.