Home / 13,501.68-18,636.48-8,198.88

Finding the Fourth Proportional to 13,501.68, 18,636.48 and 8,198.88

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Solution

The fourth proportional to 13,501.68, 18,636.48 and 8,198.88 is: 11,316.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,501.68 : 18,636.48 = 8,198.88 : x
  2. Step 2: Convert to fraction form
    13,501.68/18,636.48 = 8,198.88/x
  3. Step 3: Cross multiply
    13,501.68x = 18,636.48 × 8,198.88
  4. Step 4: Simplify right side
    13,501.68x = 152,798,263.14
  5. Step 5: Solve for x
    x = 152,798,263.14/13,501.68
  6. Step 6: Final answer
    x = 11,316.98

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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.