Home / 20,128.03-30,153.97-19,283.47

Finding the Fourth Proportional to 20,128.03, 30,153.97 and 19,283.47

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Solution

The fourth proportional to 20,128.03, 30,153.97 and 19,283.47 is: 28,888.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128.03 : 30,153.97 = 19,283.47 : x
  2. Step 2: Convert to fraction form
    20,128.03/30,153.97 = 19,283.47/x
  3. Step 3: Cross multiply
    20,128.03x = 30,153.97 × 19,283.47
  4. Step 4: Simplify right side
    20,128.03x = 581,473,124.60
  5. Step 5: Solve for x
    x = 581,473,124.60/20,128.03
  6. Step 6: Final answer
    x = 28,888.73

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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.