Home / 18,891.48-28,311.30-11,953.56

Finding the Fourth Proportional to 18,891.48, 28,311.30 and 11,953.56

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Solution

The fourth proportional to 18,891.48, 28,311.30 and 11,953.56 is: 17,913.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.48 : 28,311.30 = 11,953.56 : x
  2. Step 2: Convert to fraction form
    18,891.48/28,311.30 = 11,953.56/x
  3. Step 3: Cross multiply
    18,891.48x = 28,311.30 × 11,953.56
  4. Step 4: Simplify right side
    18,891.48x = 338,420,823.23
  5. Step 5: Solve for x
    x = 338,420,823.23/18,891.48
  6. Step 6: Final answer
    x = 17,913.94

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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.