Home / 13,173.76-18,180.08-7,867.58

Finding the Fourth Proportional to 13,173.76, 18,180.08 and 7,867.58

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Solution

The fourth proportional to 13,173.76, 18,180.08 and 7,867.58 is: 10,857.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173.76 : 18,180.08 = 7,867.58 : x
  2. Step 2: Convert to fraction form
    13,173.76/18,180.08 = 7,867.58/x
  3. Step 3: Cross multiply
    13,173.76x = 18,180.08 × 7,867.58
  4. Step 4: Simplify right side
    13,173.76x = 143,033,233.81
  5. Step 5: Solve for x
    x = 143,033,233.81/13,173.76
  6. Step 6: Final answer
    x = 10,857.43

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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.