Home / 19,020.40-28,530.60-17,999.80

Finding the Fourth Proportional to 19,020.40, 28,530.60 and 17,999.80

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Solution

The fourth proportional to 19,020.40, 28,530.60 and 17,999.80 is: 26,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,020.40 : 28,530.60 = 17,999.80 : x
  2. Step 2: Convert to fraction form
    19,020.40/28,530.60 = 17,999.80/x
  3. Step 3: Cross multiply
    19,020.40x = 28,530.60 × 17,999.80
  4. Step 4: Simplify right side
    19,020.40x = 513,545,093.88
  5. Step 5: Solve for x
    x = 513,545,093.88/19,020.40
  6. Step 6: Final answer
    x = 26,999.70

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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.