Home / 19,019.80-28,529.70-17,999.20

Finding the Fourth Proportional to 19,019.80, 28,529.70 and 17,999.20

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Solution

The fourth proportional to 19,019.80, 28,529.70 and 17,999.20 is: 26,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,019.80 : 28,529.70 = 17,999.20 : x
  2. Step 2: Convert to fraction form
    19,019.80/28,529.70 = 17,999.20/x
  3. Step 3: Cross multiply
    19,019.80x = 28,529.70 × 17,999.20
  4. Step 4: Simplify right side
    19,019.80x = 513,511,776.24
  5. Step 5: Solve for x
    x = 513,511,776.24/19,019.80
  6. Step 6: Final answer
    x = 26,998.80

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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.