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Finding the Fourth Proportional to 20,249.56, 30,374.21 and 6,916.12

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Solution

The fourth proportional to 20,249.56, 30,374.21 and 6,916.12 is: 10,374.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,249.56 : 30,374.21 = 6,916.12 : x
  2. Step 2: Convert to fraction form
    20,249.56/30,374.21 = 6,916.12/x
  3. Step 3: Cross multiply
    20,249.56x = 30,374.21 × 6,916.12
  4. Step 4: Simplify right side
    20,249.56x = 210,071,681.27
  5. Step 5: Solve for x
    x = 210,071,681.27/20,249.56
  6. Step 6: Final answer
    x = 10,374.14

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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.