Home / 13,567.69-20,351.81-8,917.35

Finding the Fourth Proportional to 13,567.69, 20,351.81 and 8,917.35

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Solution

The fourth proportional to 13,567.69, 20,351.81 and 8,917.35 is: 13,376.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,567.69 : 20,351.81 = 8,917.35 : x
  2. Step 2: Convert to fraction form
    13,567.69/20,351.81 = 8,917.35/x
  3. Step 3: Cross multiply
    13,567.69x = 20,351.81 × 8,917.35
  4. Step 4: Simplify right side
    13,567.69x = 181,484,212.90
  5. Step 5: Solve for x
    x = 181,484,212.90/13,567.69
  6. Step 6: Final answer
    x = 13,376.21

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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.