Home / 13,297.85-18,355.73-11,879.07

Finding the Fourth Proportional to 13,297.85, 18,355.73 and 11,879.07

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Solution

The fourth proportional to 13,297.85, 18,355.73 and 11,879.07 is: 16,397.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,297.85 : 18,355.73 = 11,879.07 : x
  2. Step 2: Convert to fraction form
    13,297.85/18,355.73 = 11,879.07/x
  3. Step 3: Cross multiply
    13,297.85x = 18,355.73 × 11,879.07
  4. Step 4: Simplify right side
    13,297.85x = 218,049,001.57
  5. Step 5: Solve for x
    x = 218,049,001.57/13,297.85
  6. Step 6: Final answer
    x = 16,397.31

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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.