Home / 30,289.80-45,453.60-11,571.51

Finding the Fourth Proportional to 30,289.80, 45,453.60 and 11,571.51

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Solution

The fourth proportional to 30,289.80, 45,453.60 and 11,571.51 is: 17,364.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,289.80 : 45,453.60 = 11,571.51 : x
  2. Step 2: Convert to fraction form
    30,289.80/45,453.60 = 11,571.51/x
  3. Step 3: Cross multiply
    30,289.80x = 45,453.60 × 11,571.51
  4. Step 4: Simplify right side
    30,289.80x = 525,966,786.94
  5. Step 5: Solve for x
    x = 525,966,786.94/30,289.80
  6. Step 6: Final answer
    x = 17,364.49

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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.