Home / 28,926.80-43,390.20-16,485.20

Finding the Fourth Proportional to 28,926.80, 43,390.20 and 16,485.20

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Solution

The fourth proportional to 28,926.80, 43,390.20 and 16,485.20 is: 24,727.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,926.80 : 43,390.20 = 16,485.20 : x
  2. Step 2: Convert to fraction form
    28,926.80/43,390.20 = 16,485.20/x
  3. Step 3: Cross multiply
    28,926.80x = 43,390.20 × 16,485.20
  4. Step 4: Simplify right side
    28,926.80x = 715,296,125.04
  5. Step 5: Solve for x
    x = 715,296,125.04/28,926.80
  6. Step 6: Final answer
    x = 24,727.80

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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.