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Finding the Fourth Proportional to 21,804.80, 32,745.60 and 16,886.40

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Solution

The fourth proportional to 21,804.80, 32,745.60 and 16,886.40 is: 25,359.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,804.80 : 32,745.60 = 16,886.40 : x
  2. Step 2: Convert to fraction form
    21,804.80/32,745.60 = 16,886.40/x
  3. Step 3: Cross multiply
    21,804.80x = 32,745.60 × 16,886.40
  4. Step 4: Simplify right side
    21,804.80x = 552,955,299.84
  5. Step 5: Solve for x
    x = 552,955,299.84/21,804.80
  6. Step 6: Final answer
    x = 25,359.34

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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.