Home / 13,190.10-19,779.36-3,953.94

Finding the Fourth Proportional to 13,190.10, 19,779.36 and 3,953.94

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Solution

The fourth proportional to 13,190.10, 19,779.36 and 3,953.94 is: 5,929.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.10 : 19,779.36 = 3,953.94 : x
  2. Step 2: Convert to fraction form
    13,190.10/19,779.36 = 3,953.94/x
  3. Step 3: Cross multiply
    13,190.10x = 19,779.36 × 3,953.94
  4. Step 4: Simplify right side
    13,190.10x = 78,206,402.68
  5. Step 5: Solve for x
    x = 78,206,402.68/13,190.10
  6. Step 6: Final answer
    x = 5,929.17

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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.