Home / 28,692.96-43,040.64-8,971.92

Finding the Fourth Proportional to 28,692.96, 43,040.64 and 8,971.92

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Solution

The fourth proportional to 28,692.96, 43,040.64 and 8,971.92 is: 13,458.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,692.96 : 43,040.64 = 8,971.92 : x
  2. Step 2: Convert to fraction form
    28,692.96/43,040.64 = 8,971.92/x
  3. Step 3: Cross multiply
    28,692.96x = 43,040.64 × 8,971.92
  4. Step 4: Simplify right side
    28,692.96x = 386,157,178.83
  5. Step 5: Solve for x
    x = 386,157,178.83/28,692.96
  6. Step 6: Final answer
    x = 13,458.26

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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.