Home / 28,388.80-42,589.14-9,667.36

Finding the Fourth Proportional to 28,388.80, 42,589.14 and 9,667.36

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Solution

The fourth proportional to 28,388.80, 42,589.14 and 9,667.36 is: 14,503.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,388.80 : 42,589.14 = 9,667.36 : x
  2. Step 2: Convert to fraction form
    28,388.80/42,589.14 = 9,667.36/x
  3. Step 3: Cross multiply
    28,388.80x = 42,589.14 × 9,667.36
  4. Step 4: Simplify right side
    28,388.80x = 411,724,548.47
  5. Step 5: Solve for x
    x = 411,724,548.47/28,388.80
  6. Step 6: Final answer
    x = 14,503.06

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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.