Home / 13,580.90-20,373.22-4,222.38

Finding the Fourth Proportional to 13,580.90, 20,373.22 and 4,222.38

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Solution

The fourth proportional to 13,580.90, 20,373.22 and 4,222.38 is: 6,334.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.90 : 20,373.22 = 4,222.38 : x
  2. Step 2: Convert to fraction form
    13,580.90/20,373.22 = 4,222.38/x
  3. Step 3: Cross multiply
    13,580.90x = 20,373.22 × 4,222.38
  4. Step 4: Simplify right side
    13,580.90x = 86,023,476.66
  5. Step 5: Solve for x
    x = 86,023,476.66/13,580.90
  6. Step 6: Final answer
    x = 6,334.15

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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.