Home / 19,120.80-28,686.66-5,973.36

Finding the Fourth Proportional to 19,120.80, 28,686.66 and 5,973.36

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Solution

The fourth proportional to 19,120.80, 28,686.66 and 5,973.36 is: 8,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,120.80 : 28,686.66 = 5,973.36 : x
  2. Step 2: Convert to fraction form
    19,120.80/28,686.66 = 5,973.36/x
  3. Step 3: Cross multiply
    19,120.80x = 28,686.66 × 5,973.36
  4. Step 4: Simplify right side
    19,120.80x = 171,355,747.38
  5. Step 5: Solve for x
    x = 171,355,747.38/19,120.80
  6. Step 6: Final answer
    x = 8,961.75

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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.