Home / 20,903.03-28,855.18-12,837.99

Finding the Fourth Proportional to 20,903.03, 28,855.18 and 12,837.99

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Solution

The fourth proportional to 20,903.03, 28,855.18 and 12,837.99 is: 17,721.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.03 : 28,855.18 = 12,837.99 : x
  2. Step 2: Convert to fraction form
    20,903.03/28,855.18 = 12,837.99/x
  3. Step 3: Cross multiply
    20,903.03x = 28,855.18 × 12,837.99
  4. Step 4: Simplify right side
    20,903.03x = 370,442,558.37
  5. Step 5: Solve for x
    x = 370,442,558.37/20,903.03
  6. Step 6: Final answer
    x = 17,721.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.