Home / 18,810.68-28,184.92-11,399.72

Finding the Fourth Proportional to 18,810.68, 28,184.92 and 11,399.72

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Solution

The fourth proportional to 18,810.68, 28,184.92 and 11,399.72 is: 17,080.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,810.68 : 28,184.92 = 11,399.72 : x
  2. Step 2: Convert to fraction form
    18,810.68/28,184.92 = 11,399.72/x
  3. Step 3: Cross multiply
    18,810.68x = 28,184.92 × 11,399.72
  4. Step 4: Simplify right side
    18,810.68x = 321,300,026.80
  5. Step 5: Solve for x
    x = 321,300,026.80/18,810.68
  6. Step 6: Final answer
    x = 17,080.73

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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.