Home / 13,477.80-20,216.70-11,837.55

Finding the Fourth Proportional to 13,477.80, 20,216.70 and 11,837.55

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Solution

The fourth proportional to 13,477.80, 20,216.70 and 11,837.55 is: 17,756.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,477.80 : 20,216.70 = 11,837.55 : x
  2. Step 2: Convert to fraction form
    13,477.80/20,216.70 = 11,837.55/x
  3. Step 3: Cross multiply
    13,477.80x = 20,216.70 × 11,837.55
  4. Step 4: Simplify right side
    13,477.80x = 239,316,197.09
  5. Step 5: Solve for x
    x = 239,316,197.09/13,477.80
  6. Step 6: Final answer
    x = 17,756.33

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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.