Home / 13,164.12-18,161.73-7,785.36

Finding the Fourth Proportional to 13,164.12, 18,161.73 and 7,785.36

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Solution

The fourth proportional to 13,164.12, 18,161.73 and 7,785.36 is: 10,740.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,164.12 : 18,161.73 = 7,785.36 : x
  2. Step 2: Convert to fraction form
    13,164.12/18,161.73 = 7,785.36/x
  3. Step 3: Cross multiply
    13,164.12x = 18,161.73 × 7,785.36
  4. Step 4: Simplify right side
    13,164.12x = 141,395,606.27
  5. Step 5: Solve for x
    x = 141,395,606.27/13,164.12
  6. Step 6: Final answer
    x = 10,740.98

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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.