Home / 13,849.26-19,112.40-7,881.80

Finding the Fourth Proportional to 13,849.26, 19,112.40 and 7,881.80

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Solution

The fourth proportional to 13,849.26, 19,112.40 and 7,881.80 is: 10,877.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,849.26 : 19,112.40 = 7,881.80 : x
  2. Step 2: Convert to fraction form
    13,849.26/19,112.40 = 7,881.80/x
  3. Step 3: Cross multiply
    13,849.26x = 19,112.40 × 7,881.80
  4. Step 4: Simplify right side
    13,849.26x = 150,640,018.76
  5. Step 5: Solve for x
    x = 150,640,018.76/13,849.26
  6. Step 6: Final answer
    x = 10,877.12

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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.