Home / 13,636.22-18,816.88-7,666.78

Finding the Fourth Proportional to 13,636.22, 18,816.88 and 7,666.78

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Solution

The fourth proportional to 13,636.22, 18,816.88 and 7,666.78 is: 10,579.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,636.22 : 18,816.88 = 7,666.78 : x
  2. Step 2: Convert to fraction form
    13,636.22/18,816.88 = 7,666.78/x
  3. Step 3: Cross multiply
    13,636.22x = 18,816.88 × 7,666.78
  4. Step 4: Simplify right side
    13,636.22x = 144,264,879.25
  5. Step 5: Solve for x
    x = 144,264,879.25/13,636.22
  6. Step 6: Final answer
    x = 10,579.54

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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.