Home / 20,309.48-30,477.21-8,622.70

Finding the Fourth Proportional to 20,309.48, 30,477.21 and 8,622.70

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Solution

The fourth proportional to 20,309.48, 30,477.21 and 8,622.70 is: 12,939.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.48 : 30,477.21 = 8,622.70 : x
  2. Step 2: Convert to fraction form
    20,309.48/30,477.21 = 8,622.70/x
  3. Step 3: Cross multiply
    20,309.48x = 30,477.21 × 8,622.70
  4. Step 4: Simplify right side
    20,309.48x = 262,795,950.08
  5. Step 5: Solve for x
    x = 262,795,950.08/20,309.48
  6. Step 6: Final answer
    x = 12,939.57

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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.