Home / 20,927.44-31,396.62-12,154.81

Finding the Fourth Proportional to 20,927.44, 31,396.62 and 12,154.81

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Solution

The fourth proportional to 20,927.44, 31,396.62 and 12,154.81 is: 18,235.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.44 : 31,396.62 = 12,154.81 : x
  2. Step 2: Convert to fraction form
    20,927.44/31,396.62 = 12,154.81/x
  3. Step 3: Cross multiply
    20,927.44x = 31,396.62 × 12,154.81
  4. Step 4: Simplify right side
    20,927.44x = 381,619,950.74
  5. Step 5: Solve for x
    x = 381,619,950.74/20,927.44
  6. Step 6: Final answer
    x = 18,235.39

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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.