Home / 12,667.09-18,990.39-5,277.11

Finding the Fourth Proportional to 12,667.09, 18,990.39 and 5,277.11

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Solution

The fourth proportional to 12,667.09, 18,990.39 and 5,277.11 is: 7,911.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,667.09 : 18,990.39 = 5,277.11 : x
  2. Step 2: Convert to fraction form
    12,667.09/18,990.39 = 5,277.11/x
  3. Step 3: Cross multiply
    12,667.09x = 18,990.39 × 5,277.11
  4. Step 4: Simplify right side
    12,667.09x = 100,214,282.02
  5. Step 5: Solve for x
    x = 100,214,282.02/12,667.09
  6. Step 6: Final answer
    x = 7,911.39

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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.