Home / 18,989.72-28,458.80-10,536.29

Finding the Fourth Proportional to 18,989.72, 28,458.80 and 10,536.29

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Solution

The fourth proportional to 18,989.72, 28,458.80 and 10,536.29 is: 15,790.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.72 : 28,458.80 = 10,536.29 : x
  2. Step 2: Convert to fraction form
    18,989.72/28,458.80 = 10,536.29/x
  3. Step 3: Cross multiply
    18,989.72x = 28,458.80 × 10,536.29
  4. Step 4: Simplify right side
    18,989.72x = 299,850,169.85
  5. Step 5: Solve for x
    x = 299,850,169.85/18,989.72
  6. Step 6: Final answer
    x = 15,790.13

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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.