Home / 13,112.13-18,094.94-7,143.80

Finding the Fourth Proportional to 13,112.13, 18,094.94 and 7,143.80

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Solution

The fourth proportional to 13,112.13, 18,094.94 and 7,143.80 is: 9,858.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.13 : 18,094.94 = 7,143.80 : x
  2. Step 2: Convert to fraction form
    13,112.13/18,094.94 = 7,143.80/x
  3. Step 3: Cross multiply
    13,112.13x = 18,094.94 × 7,143.80
  4. Step 4: Simplify right side
    13,112.13x = 129,266,573.15
  5. Step 5: Solve for x
    x = 129,266,573.15/13,112.13
  6. Step 6: Final answer
    x = 9,858.55

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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.