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Finding the Fourth Proportional to 18,998.37, 28,472.72 and 10,214.37

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Solution

The fourth proportional to 18,998.37, 28,472.72 and 10,214.37 is: 15,308.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.37 : 28,472.72 = 10,214.37 : x
  2. Step 2: Convert to fraction form
    18,998.37/28,472.72 = 10,214.37/x
  3. Step 3: Cross multiply
    18,998.37x = 28,472.72 × 10,214.37
  4. Step 4: Simplify right side
    18,998.37x = 290,830,845.91
  5. Step 5: Solve for x
    x = 290,830,845.91/18,998.37
  6. Step 6: Final answer
    x = 15,308.20

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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.