Home / 19,122.75-28,686.56-5,271.75

Finding the Fourth Proportional to 19,122.75, 28,686.56 and 5,271.75

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Solution

The fourth proportional to 19,122.75, 28,686.56 and 5,271.75 is: 7,908.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,122.75 : 28,686.56 = 5,271.75 : x
  2. Step 2: Convert to fraction form
    19,122.75/28,686.56 = 5,271.75/x
  3. Step 3: Cross multiply
    19,122.75x = 28,686.56 × 5,271.75
  4. Step 4: Simplify right side
    19,122.75x = 151,228,346.32
  5. Step 5: Solve for x
    x = 151,228,346.32/19,122.75
  6. Step 6: Final answer
    x = 7,908.29

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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.