Home / 13,220.20-19,829.72-4,455.08

Finding the Fourth Proportional to 13,220.20, 19,829.72 and 4,455.08

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Solution

The fourth proportional to 13,220.20, 19,829.72 and 4,455.08 is: 6,682.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.20 : 19,829.72 = 4,455.08 : x
  2. Step 2: Convert to fraction form
    13,220.20/19,829.72 = 4,455.08/x
  3. Step 3: Cross multiply
    13,220.20x = 19,829.72 × 4,455.08
  4. Step 4: Simplify right side
    13,220.20x = 88,342,900.97
  5. Step 5: Solve for x
    x = 88,342,900.97/13,220.20
  6. Step 6: Final answer
    x = 6,682.42

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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.