Home / 13,111.36-18,093.45-7,142.98

Finding the Fourth Proportional to 13,111.36, 18,093.45 and 7,142.98

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Solution

The fourth proportional to 13,111.36, 18,093.45 and 7,142.98 is: 9,857.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,111.36 : 18,093.45 = 7,142.98 : x
  2. Step 2: Convert to fraction form
    13,111.36/18,093.45 = 7,142.98/x
  3. Step 3: Cross multiply
    13,111.36x = 18,093.45 × 7,142.98
  4. Step 4: Simplify right side
    13,111.36x = 129,241,106.25
  5. Step 5: Solve for x
    x = 129,241,106.25/13,111.36
  6. Step 6: Final answer
    x = 9,857.19

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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.