Home / 13,257.60-18,284.76-8,218.32

Finding the Fourth Proportional to 13,257.60, 18,284.76 and 8,218.32

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Solution

The fourth proportional to 13,257.60, 18,284.76 and 8,218.32 is: 11,334.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.60 : 18,284.76 = 8,218.32 : x
  2. Step 2: Convert to fraction form
    13,257.60/18,284.76 = 8,218.32/x
  3. Step 3: Cross multiply
    13,257.60x = 18,284.76 × 8,218.32
  4. Step 4: Simplify right side
    13,257.60x = 150,270,008.80
  5. Step 5: Solve for x
    x = 150,270,008.80/13,257.60
  6. Step 6: Final answer
    x = 11,334.63

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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.