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Finding the Fourth Proportional to 18,953.70, 28,422.31 and 10,067.07

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Solution

The fourth proportional to 18,953.70, 28,422.31 and 10,067.07 is: 15,096.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.70 : 28,422.31 = 10,067.07 : x
  2. Step 2: Convert to fraction form
    18,953.70/28,422.31 = 10,067.07/x
  3. Step 3: Cross multiply
    18,953.70x = 28,422.31 × 10,067.07
  4. Step 4: Simplify right side
    18,953.70x = 286,129,402.18
  5. Step 5: Solve for x
    x = 286,129,402.18/18,953.70
  6. Step 6: Final answer
    x = 15,096.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.