Home / 28,487.08-42,736.31-8,764.89

Finding the Fourth Proportional to 28,487.08, 42,736.31 and 8,764.89

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Solution

The fourth proportional to 28,487.08, 42,736.31 and 8,764.89 is: 13,149.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.08 : 42,736.31 = 8,764.89 : x
  2. Step 2: Convert to fraction form
    28,487.08/42,736.31 = 8,764.89/x
  3. Step 3: Cross multiply
    28,487.08x = 42,736.31 × 8,764.89
  4. Step 4: Simplify right side
    28,487.08x = 374,579,056.16
  5. Step 5: Solve for x
    x = 374,579,056.16/28,487.08
  6. Step 6: Final answer
    x = 13,149.09

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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.