Home / 20,103.33-30,155.19-7,620

Finding the Fourth Proportional to 20,103.33, 30,155.19 and 7,620

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Solution

The fourth proportional to 20,103.33, 30,155.19 and 7,620 is: 11,430.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.33 : 30,155.19 = 7,620 : x
  2. Step 2: Convert to fraction form
    20,103.33/30,155.19 = 7,620/x
  3. Step 3: Cross multiply
    20,103.33x = 30,155.19 × 7,620
  4. Step 4: Simplify right side
    20,103.33x = 229,782,547.80
  5. Step 5: Solve for x
    x = 229,782,547.80/20,103.33
  6. Step 6: Final answer
    x = 11,430.07

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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.