Home / 20,847.98-31,277.81-8,376.76

Finding the Fourth Proportional to 20,847.98, 31,277.81 and 8,376.76

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Solution

The fourth proportional to 20,847.98, 31,277.81 and 8,376.76 is: 12,567.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.98 : 31,277.81 = 8,376.76 : x
  2. Step 2: Convert to fraction form
    20,847.98/31,277.81 = 8,376.76/x
  3. Step 3: Cross multiply
    20,847.98x = 31,277.81 × 8,376.76
  4. Step 4: Simplify right side
    20,847.98x = 262,006,767.73
  5. Step 5: Solve for x
    x = 262,006,767.73/20,847.98
  6. Step 6: Final answer
    x = 12,567.49

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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.