Home / 19,763.89-27,288.43-12,220.56

Finding the Fourth Proportional to 19,763.89, 27,288.43 and 12,220.56

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Solution

The fourth proportional to 19,763.89, 27,288.43 and 12,220.56 is: 16,873.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,763.89 : 27,288.43 = 12,220.56 : x
  2. Step 2: Convert to fraction form
    19,763.89/27,288.43 = 12,220.56/x
  3. Step 3: Cross multiply
    19,763.89x = 27,288.43 × 12,220.56
  4. Step 4: Simplify right side
    19,763.89x = 333,479,865.57
  5. Step 5: Solve for x
    x = 333,479,865.57/19,763.89
  6. Step 6: Final answer
    x = 16,873.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.