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Finding the Fourth Proportional to 18,806.52, 28,101.84 and 14,339.64

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Solution

The fourth proportional to 18,806.52, 28,101.84 and 14,339.64 is: 21,427.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,806.52 : 28,101.84 = 14,339.64 : x
  2. Step 2: Convert to fraction form
    18,806.52/28,101.84 = 14,339.64/x
  3. Step 3: Cross multiply
    18,806.52x = 28,101.84 × 14,339.64
  4. Step 4: Simplify right side
    18,806.52x = 402,970,268.94
  5. Step 5: Solve for x
    x = 402,970,268.94/18,806.52
  6. Step 6: Final answer
    x = 21,427.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.