Home / 18,090.80-27,089.46-12,485.76

Finding the Fourth Proportional to 18,090.80, 27,089.46 and 12,485.76

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Solution

The fourth proportional to 18,090.80, 27,089.46 and 12,485.76 is: 18,696.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,090.80 : 27,089.46 = 12,485.76 : x
  2. Step 2: Convert to fraction form
    18,090.80/27,089.46 = 12,485.76/x
  3. Step 3: Cross multiply
    18,090.80x = 27,089.46 × 12,485.76
  4. Step 4: Simplify right side
    18,090.80x = 338,232,563.81
  5. Step 5: Solve for x
    x = 338,232,563.81/18,090.80
  6. Step 6: Final answer
    x = 18,696.39

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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.