Home / 14,128.80-21,205.35-6,243.45

Finding the Fourth Proportional to 14,128.80, 21,205.35 and 6,243.45

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Solution

The fourth proportional to 14,128.80, 21,205.35 and 6,243.45 is: 9,370.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,128.80 : 21,205.35 = 6,243.45 : x
  2. Step 2: Convert to fraction form
    14,128.80/21,205.35 = 6,243.45/x
  3. Step 3: Cross multiply
    14,128.80x = 21,205.35 × 6,243.45
  4. Step 4: Simplify right side
    14,128.80x = 132,394,542.46
  5. Step 5: Solve for x
    x = 132,394,542.46/14,128.80
  6. Step 6: Final answer
    x = 9,370.54

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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.