Home / 20,433.48-30,621.87-9,312.99

Finding the Fourth Proportional to 20,433.48, 30,621.87 and 9,312.99

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Solution

The fourth proportional to 20,433.48, 30,621.87 and 9,312.99 is: 13,956.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.48 : 30,621.87 = 9,312.99 : x
  2. Step 2: Convert to fraction form
    20,433.48/30,621.87 = 9,312.99/x
  3. Step 3: Cross multiply
    20,433.48x = 30,621.87 × 9,312.99
  4. Step 4: Simplify right side
    20,433.48x = 285,181,169.09
  5. Step 5: Solve for x
    x = 285,181,169.09/20,433.48
  6. Step 6: Final answer
    x = 13,956.56

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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.