Home / 13,941.09-19,236.44-7,971.80

Finding the Fourth Proportional to 13,941.09, 19,236.44 and 7,971.80

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Solution

The fourth proportional to 13,941.09, 19,236.44 and 7,971.80 is: 10,999.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,941.09 : 19,236.44 = 7,971.80 : x
  2. Step 2: Convert to fraction form
    13,941.09/19,236.44 = 7,971.80/x
  3. Step 3: Cross multiply
    13,941.09x = 19,236.44 × 7,971.80
  4. Step 4: Simplify right side
    13,941.09x = 153,348,916.35
  5. Step 5: Solve for x
    x = 153,348,916.35/13,941.09
  6. Step 6: Final answer
    x = 10,999.78

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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.