Home / 13,821.73-19,074.40-8,445.06

Finding the Fourth Proportional to 13,821.73, 19,074.40 and 8,445.06

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Solution

The fourth proportional to 13,821.73, 19,074.40 and 8,445.06 is: 11,654.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.73 : 19,074.40 = 8,445.06 : x
  2. Step 2: Convert to fraction form
    13,821.73/19,074.40 = 8,445.06/x
  3. Step 3: Cross multiply
    13,821.73x = 19,074.40 × 8,445.06
  4. Step 4: Simplify right side
    13,821.73x = 161,084,314.87
  5. Step 5: Solve for x
    x = 161,084,314.87/13,821.73
  6. Step 6: Final answer
    x = 11,654.42

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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.