Home / 13,782.30-19,020.60-8,478.96

Finding the Fourth Proportional to 13,782.30, 19,020.60 and 8,478.96

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Solution

The fourth proportional to 13,782.30, 19,020.60 and 8,478.96 is: 11,701.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.30 : 19,020.60 = 8,478.96 : x
  2. Step 2: Convert to fraction form
    13,782.30/19,020.60 = 8,478.96/x
  3. Step 3: Cross multiply
    13,782.30x = 19,020.60 × 8,478.96
  4. Step 4: Simplify right side
    13,782.30x = 161,274,906.58
  5. Step 5: Solve for x
    x = 161,274,906.58/13,782.30
  6. Step 6: Final answer
    x = 11,701.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.