Home / 18,806.23-28,158.31-12,216.07

Finding the Fourth Proportional to 18,806.23, 28,158.31 and 12,216.07

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Solution

The fourth proportional to 18,806.23, 28,158.31 and 12,216.07 is: 18,290.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,806.23 : 28,158.31 = 12,216.07 : x
  2. Step 2: Convert to fraction form
    18,806.23/28,158.31 = 12,216.07/x
  3. Step 3: Cross multiply
    18,806.23x = 28,158.31 × 12,216.07
  4. Step 4: Simplify right side
    18,806.23x = 343,983,886.04
  5. Step 5: Solve for x
    x = 343,983,886.04/18,806.23
  6. Step 6: Final answer
    x = 18,290.95

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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.