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Finding the Fourth Proportional to 28,137.01, 42,193.20 and 13,350.15

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Solution

The fourth proportional to 28,137.01, 42,193.20 and 13,350.15 is: 20,019.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,137.01 : 42,193.20 = 13,350.15 : x
  2. Step 2: Convert to fraction form
    28,137.01/42,193.20 = 13,350.15/x
  3. Step 3: Cross multiply
    28,137.01x = 42,193.20 × 13,350.15
  4. Step 4: Simplify right side
    28,137.01x = 563,285,548.98
  5. Step 5: Solve for x
    x = 563,285,548.98/28,137.01
  6. Step 6: Final answer
    x = 20,019.38

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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.