Home / 13,643.37-20,435.09-11,276.55

Finding the Fourth Proportional to 13,643.37, 20,435.09 and 11,276.55

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Solution

The fourth proportional to 13,643.37, 20,435.09 and 11,276.55 is: 16,890.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.37 : 20,435.09 = 11,276.55 : x
  2. Step 2: Convert to fraction form
    13,643.37/20,435.09 = 11,276.55/x
  3. Step 3: Cross multiply
    13,643.37x = 20,435.09 × 11,276.55
  4. Step 4: Simplify right side
    13,643.37x = 230,437,257.76
  5. Step 5: Solve for x
    x = 230,437,257.76/13,643.37
  6. Step 6: Final answer
    x = 16,890.05

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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.