Home / 12,690.68-18,996.03-11,353.36

Finding the Fourth Proportional to 12,690.68, 18,996.03 and 11,353.36

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Solution

The fourth proportional to 12,690.68, 18,996.03 and 11,353.36 is: 16,994.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.68 : 18,996.03 = 11,353.36 : x
  2. Step 2: Convert to fraction form
    12,690.68/18,996.03 = 11,353.36/x
  3. Step 3: Cross multiply
    12,690.68x = 18,996.03 × 11,353.36
  4. Step 4: Simplify right side
    12,690.68x = 215,668,767.16
  5. Step 5: Solve for x
    x = 215,668,767.16/12,690.68
  6. Step 6: Final answer
    x = 16,994.26

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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.