Home / 30,109.78-45,164.26-9,333.28

Finding the Fourth Proportional to 30,109.78, 45,164.26 and 9,333.28

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Solution

The fourth proportional to 30,109.78, 45,164.26 and 9,333.28 is: 13,999.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,109.78 : 45,164.26 = 9,333.28 : x
  2. Step 2: Convert to fraction form
    30,109.78/45,164.26 = 9,333.28/x
  3. Step 3: Cross multiply
    30,109.78x = 45,164.26 × 9,333.28
  4. Step 4: Simplify right side
    30,109.78x = 421,530,684.57
  5. Step 5: Solve for x
    x = 421,530,684.57/30,109.78
  6. Step 6: Final answer
    x = 13,999.79

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1.5x scale

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.