Home / 13,395.90-18,489.78-8,094.36

Finding the Fourth Proportional to 13,395.90, 18,489.78 and 8,094.36

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Solution

The fourth proportional to 13,395.90, 18,489.78 and 8,094.36 is: 11,172.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.90 : 18,489.78 = 8,094.36 : x
  2. Step 2: Convert to fraction form
    13,395.90/18,489.78 = 8,094.36/x
  3. Step 3: Cross multiply
    13,395.90x = 18,489.78 × 8,094.36
  4. Step 4: Simplify right side
    13,395.90x = 149,662,935.64
  5. Step 5: Solve for x
    x = 149,662,935.64/13,395.90
  6. Step 6: Final answer
    x = 11,172.29

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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.