Home / 13,688.98-20,530.99-3,825.82

Finding the Fourth Proportional to 13,688.98, 20,530.99 and 3,825.82

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Solution

The fourth proportional to 13,688.98, 20,530.99 and 3,825.82 is: 5,738.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.98 : 20,530.99 = 3,825.82 : x
  2. Step 2: Convert to fraction form
    13,688.98/20,530.99 = 3,825.82/x
  3. Step 3: Cross multiply
    13,688.98x = 20,530.99 × 3,825.82
  4. Step 4: Simplify right side
    13,688.98x = 78,547,769.51
  5. Step 5: Solve for x
    x = 78,547,769.51/13,688.98
  6. Step 6: Final answer
    x = 5,738.03

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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.