Home / 14,255.70-21,346.64-12,668.81

Finding the Fourth Proportional to 14,255.70, 21,346.64 and 12,668.81

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Solution

The fourth proportional to 14,255.70, 21,346.64 and 12,668.81 is: 18,970.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,255.70 : 21,346.64 = 12,668.81 : x
  2. Step 2: Convert to fraction form
    14,255.70/21,346.64 = 12,668.81/x
  3. Step 3: Cross multiply
    14,255.70x = 21,346.64 × 12,668.81
  4. Step 4: Simplify right side
    14,255.70x = 270,436,403.73
  5. Step 5: Solve for x
    x = 270,436,403.73/14,255.70
  6. Step 6: Final answer
    x = 18,970.41

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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.