Home / 14,172.55-21,364.97-13,221.07

Finding the Fourth Proportional to 14,172.55, 21,364.97 and 13,221.07

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Solution

The fourth proportional to 14,172.55, 21,364.97 and 13,221.07 is: 19,930.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,172.55 : 21,364.97 = 13,221.07 : x
  2. Step 2: Convert to fraction form
    14,172.55/21,364.97 = 13,221.07/x
  3. Step 3: Cross multiply
    14,172.55x = 21,364.97 × 13,221.07
  4. Step 4: Simplify right side
    14,172.55x = 282,467,763.92
  5. Step 5: Solve for x
    x = 282,467,763.92/14,172.55
  6. Step 6: Final answer
    x = 19,930.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.