Home / 20,222.24-30,334.80-5,430.80

Finding the Fourth Proportional to 20,222.24, 30,334.80 and 5,430.80

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Solution

The fourth proportional to 20,222.24, 30,334.80 and 5,430.80 is: 8,146.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,222.24 : 30,334.80 = 5,430.80 : x
  2. Step 2: Convert to fraction form
    20,222.24/30,334.80 = 5,430.80/x
  3. Step 3: Cross multiply
    20,222.24x = 30,334.80 × 5,430.80
  4. Step 4: Simplify right side
    20,222.24x = 164,742,231.84
  5. Step 5: Solve for x
    x = 164,742,231.84/20,222.24
  6. Step 6: Final answer
    x = 8,146.59

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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.