Home / 13,961.09-19,260.86-7,989.57

Finding the Fourth Proportional to 13,961.09, 19,260.86 and 7,989.57

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Solution

The fourth proportional to 13,961.09, 19,260.86 and 7,989.57 is: 11,022.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,961.09 : 19,260.86 = 7,989.57 : x
  2. Step 2: Convert to fraction form
    13,961.09/19,260.86 = 7,989.57/x
  3. Step 3: Cross multiply
    13,961.09x = 19,260.86 × 7,989.57
  4. Step 4: Simplify right side
    13,961.09x = 153,885,949.28
  5. Step 5: Solve for x
    x = 153,885,949.28/13,961.09
  6. Step 6: Final answer
    x = 11,022.49

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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.