Home / 12,126.39-18,196.86-5,200.89

Finding the Fourth Proportional to 12,126.39, 18,196.86 and 5,200.89

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Solution

The fourth proportional to 12,126.39, 18,196.86 and 5,200.89 is: 7,804.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.39 : 18,196.86 = 5,200.89 : x
  2. Step 2: Convert to fraction form
    12,126.39/18,196.86 = 5,200.89/x
  3. Step 3: Cross multiply
    12,126.39x = 18,196.86 × 5,200.89
  4. Step 4: Simplify right side
    12,126.39x = 94,639,867.21
  5. Step 5: Solve for x
    x = 94,639,867.21/12,126.39
  6. Step 6: Final answer
    x = 7,804.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.