Home / 13,176.77-18,185.60-8,643.26

Finding the Fourth Proportional to 13,176.77, 18,185.60 and 8,643.26

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Solution

The fourth proportional to 13,176.77, 18,185.60 and 8,643.26 is: 11,928.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,176.77 : 18,185.60 = 8,643.26 : x
  2. Step 2: Convert to fraction form
    13,176.77/18,185.60 = 8,643.26/x
  3. Step 3: Cross multiply
    13,176.77x = 18,185.60 × 8,643.26
  4. Step 4: Simplify right side
    13,176.77x = 157,182,869.06
  5. Step 5: Solve for x
    x = 157,182,869.06/13,176.77
  6. Step 6: Final answer
    x = 11,928.79

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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.