Home / 13,103.78-18,087.10-8,075.19

Finding the Fourth Proportional to 13,103.78, 18,087.10 and 8,075.19

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Solution

The fourth proportional to 13,103.78, 18,087.10 and 8,075.19 is: 11,146.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103.78 : 18,087.10 = 8,075.19 : x
  2. Step 2: Convert to fraction form
    13,103.78/18,087.10 = 8,075.19/x
  3. Step 3: Cross multiply
    13,103.78x = 18,087.10 × 8,075.19
  4. Step 4: Simplify right side
    13,103.78x = 146,056,816.69
  5. Step 5: Solve for x
    x = 146,056,816.69/13,103.78
  6. Step 6: Final answer
    x = 11,146.16

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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.