Home / 20,220.77-30,330.25-7,746.67

Finding the Fourth Proportional to 20,220.77, 30,330.25 and 7,746.67

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Solution

The fourth proportional to 20,220.77, 30,330.25 and 7,746.67 is: 11,619.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.77 : 30,330.25 = 7,746.67 : x
  2. Step 2: Convert to fraction form
    20,220.77/30,330.25 = 7,746.67/x
  3. Step 3: Cross multiply
    20,220.77x = 30,330.25 × 7,746.67
  4. Step 4: Simplify right side
    20,220.77x = 234,958,456.31
  5. Step 5: Solve for x
    x = 234,958,456.31/20,220.77
  6. Step 6: Final answer
    x = 11,619.66

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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.