Home / 13,782.00-19,020.57-8,118.53

Finding the Fourth Proportional to 13,782.00, 19,020.57 and 8,118.53

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Solution

The fourth proportional to 13,782.00, 19,020.57 and 8,118.53 is: 11,204.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.00 : 19,020.57 = 8,118.53 : x
  2. Step 2: Convert to fraction form
    13,782.00/19,020.57 = 8,118.53/x
  3. Step 3: Cross multiply
    13,782.00x = 19,020.57 × 8,118.53
  4. Step 4: Simplify right side
    13,782.00x = 154,419,010.46
  5. Step 5: Solve for x
    x = 154,419,010.46/13,782.00
  6. Step 6: Final answer
    x = 11,204.40

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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.