Home / 28,539.12-42,814.50-9,816.72

Finding the Fourth Proportional to 28,539.12, 42,814.50 and 9,816.72

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Solution

The fourth proportional to 28,539.12, 42,814.50 and 9,816.72 is: 14,727.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.12 : 42,814.50 = 9,816.72 : x
  2. Step 2: Convert to fraction form
    28,539.12/42,814.50 = 9,816.72/x
  3. Step 3: Cross multiply
    28,539.12x = 42,814.50 × 9,816.72
  4. Step 4: Simplify right side
    28,539.12x = 420,297,958.44
  5. Step 5: Solve for x
    x = 420,297,958.44/28,539.12
  6. Step 6: Final answer
    x = 14,727.08

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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.