Home / 20,620.51-30,930.49-5,038.27

Finding the Fourth Proportional to 20,620.51, 30,930.49 and 5,038.27

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Solution

The fourth proportional to 20,620.51, 30,930.49 and 5,038.27 is: 7,557.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.51 : 30,930.49 = 5,038.27 : x
  2. Step 2: Convert to fraction form
    20,620.51/30,930.49 = 5,038.27/x
  3. Step 3: Cross multiply
    20,620.51x = 30,930.49 × 5,038.27
  4. Step 4: Simplify right side
    20,620.51x = 155,836,159.85
  5. Step 5: Solve for x
    x = 155,836,159.85/20,620.51
  6. Step 6: Final answer
    x = 7,557.34

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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.