Home / 13,051.76-19,578.36-5,259.68

Finding the Fourth Proportional to 13,051.76, 19,578.36 and 5,259.68

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Solution

The fourth proportional to 13,051.76, 19,578.36 and 5,259.68 is: 7,889.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,051.76 : 19,578.36 = 5,259.68 : x
  2. Step 2: Convert to fraction form
    13,051.76/19,578.36 = 5,259.68/x
  3. Step 3: Cross multiply
    13,051.76x = 19,578.36 × 5,259.68
  4. Step 4: Simplify right side
    13,051.76x = 102,975,908.52
  5. Step 5: Solve for x
    x = 102,975,908.52/13,051.76
  6. Step 6: Final answer
    x = 7,889.81

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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.