Home / 13,118.58-18,103.80-7,150.32

Finding the Fourth Proportional to 13,118.58, 18,103.80 and 7,150.32

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Solution

The fourth proportional to 13,118.58, 18,103.80 and 7,150.32 is: 9,867.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.58 : 18,103.80 = 7,150.32 : x
  2. Step 2: Convert to fraction form
    13,118.58/18,103.80 = 7,150.32/x
  3. Step 3: Cross multiply
    13,118.58x = 18,103.80 × 7,150.32
  4. Step 4: Simplify right side
    13,118.58x = 129,447,963.22
  5. Step 5: Solve for x
    x = 129,447,963.22/13,118.58
  6. Step 6: Final answer
    x = 9,867.53

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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.