Home / 13,571.52-20,339.88-11,809.20

Finding the Fourth Proportional to 13,571.52, 20,339.88 and 11,809.20

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Solution

The fourth proportional to 13,571.52, 20,339.88 and 11,809.20 is: 17,698.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.52 : 20,339.88 = 11,809.20 : x
  2. Step 2: Convert to fraction form
    13,571.52/20,339.88 = 11,809.20/x
  3. Step 3: Cross multiply
    13,571.52x = 20,339.88 × 11,809.20
  4. Step 4: Simplify right side
    13,571.52x = 240,197,710.90
  5. Step 5: Solve for x
    x = 240,197,710.90/13,571.52
  6. Step 6: Final answer
    x = 17,698.66

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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.