Home / 13,339.12-18,409.68-8,036.80

Finding the Fourth Proportional to 13,339.12, 18,409.68 and 8,036.80

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Solution

The fourth proportional to 13,339.12, 18,409.68 and 8,036.80 is: 11,091.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.12 : 18,409.68 = 8,036.80 : x
  2. Step 2: Convert to fraction form
    13,339.12/18,409.68 = 8,036.80/x
  3. Step 3: Cross multiply
    13,339.12x = 18,409.68 × 8,036.80
  4. Step 4: Simplify right side
    13,339.12x = 147,954,916.22
  5. Step 5: Solve for x
    x = 147,954,916.22/13,339.12
  6. Step 6: Final answer
    x = 11,091.80

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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.