Home / 13,620.22-20,430.34-3,762.34

Finding the Fourth Proportional to 13,620.22, 20,430.34 and 3,762.34

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Solution

The fourth proportional to 13,620.22, 20,430.34 and 3,762.34 is: 5,643.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.22 : 20,430.34 = 3,762.34 : x
  2. Step 2: Convert to fraction form
    13,620.22/20,430.34 = 3,762.34/x
  3. Step 3: Cross multiply
    13,620.22x = 20,430.34 × 3,762.34
  4. Step 4: Simplify right side
    13,620.22x = 76,865,885.40
  5. Step 5: Solve for x
    x = 76,865,885.40/13,620.22
  6. Step 6: Final answer
    x = 5,643.51

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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.