Home / 18,722.80-25,759.92-14,220.28

Finding the Fourth Proportional to 18,722.80, 25,759.92 and 14,220.28

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Solution

The fourth proportional to 18,722.80, 25,759.92 and 14,220.28 is: 19,565.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722.80 : 25,759.92 = 14,220.28 : x
  2. Step 2: Convert to fraction form
    18,722.80/25,759.92 = 14,220.28/x
  3. Step 3: Cross multiply
    18,722.80x = 25,759.92 × 14,220.28
  4. Step 4: Simplify right side
    18,722.80x = 366,313,275.18
  5. Step 5: Solve for x
    x = 366,313,275.18/18,722.80
  6. Step 6: Final answer
    x = 19,565.09

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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.