Home / 13,590.99-20,388.81-4,230.33

Finding the Fourth Proportional to 13,590.99, 20,388.81 and 4,230.33

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Solution

The fourth proportional to 13,590.99, 20,388.81 and 4,230.33 is: 6,346.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.99 : 20,388.81 = 4,230.33 : x
  2. Step 2: Convert to fraction form
    13,590.99/20,388.81 = 4,230.33/x
  3. Step 3: Cross multiply
    13,590.99x = 20,388.81 × 4,230.33
  4. Step 4: Simplify right side
    13,590.99x = 86,251,334.01
  5. Step 5: Solve for x
    x = 86,251,334.01/13,590.99
  6. Step 6: Final answer
    x = 6,346.21

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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.