Home / 13,272.22-18,309.54-8,558.02

Finding the Fourth Proportional to 13,272.22, 18,309.54 and 8,558.02

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Solution

The fourth proportional to 13,272.22, 18,309.54 and 8,558.02 is: 11,806.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,272.22 : 18,309.54 = 8,558.02 : x
  2. Step 2: Convert to fraction form
    13,272.22/18,309.54 = 8,558.02/x
  3. Step 3: Cross multiply
    13,272.22x = 18,309.54 × 8,558.02
  4. Step 4: Simplify right side
    13,272.22x = 156,693,409.51
  5. Step 5: Solve for x
    x = 156,693,409.51/13,272.22
  6. Step 6: Final answer
    x = 11,806.12

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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.