Home / 20,866.44-31,300.98-8,384.79

Finding the Fourth Proportional to 20,866.44, 31,300.98 and 8,384.79

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Solution

The fourth proportional to 20,866.44, 31,300.98 and 8,384.79 is: 12,577.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.44 : 31,300.98 = 8,384.79 : x
  2. Step 2: Convert to fraction form
    20,866.44/31,300.98 = 8,384.79/x
  3. Step 3: Cross multiply
    20,866.44x = 31,300.98 × 8,384.79
  4. Step 4: Simplify right side
    20,866.44x = 262,452,144.09
  5. Step 5: Solve for x
    x = 262,452,144.09/20,866.44
  6. Step 6: Final answer
    x = 12,577.72

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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.