Home / 28,299.72-42,447.14-9,579.36

Finding the Fourth Proportional to 28,299.72, 42,447.14 and 9,579.36

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Solution

The fourth proportional to 28,299.72, 42,447.14 and 9,579.36 is: 14,368.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,299.72 : 42,447.14 = 9,579.36 : x
  2. Step 2: Convert to fraction form
    28,299.72/42,447.14 = 9,579.36/x
  3. Step 3: Cross multiply
    28,299.72x = 42,447.14 × 9,579.36
  4. Step 4: Simplify right side
    28,299.72x = 406,616,174.90
  5. Step 5: Solve for x
    x = 406,616,174.90/28,299.72
  6. Step 6: Final answer
    x = 14,368.20

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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.