Home / 10,620.99-15,916.91-5,415.93

Finding the Fourth Proportional to 10,620.99, 15,916.91 and 5,415.93

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Solution

The fourth proportional to 10,620.99, 15,916.91 and 5,415.93 is: 8,116.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.99 : 15,916.91 = 5,415.93 : x
  2. Step 2: Convert to fraction form
    10,620.99/15,916.91 = 5,415.93/x
  3. Step 3: Cross multiply
    10,620.99x = 15,916.91 × 5,415.93
  4. Step 4: Simplify right side
    10,620.99x = 86,204,843.30
  5. Step 5: Solve for x
    x = 86,204,843.30/10,620.99
  6. Step 6: Final answer
    x = 8,116.46

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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.