Home / 13,918.76-20,878.08-3,530.48

Finding the Fourth Proportional to 13,918.76, 20,878.08 and 3,530.48

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Solution

The fourth proportional to 13,918.76, 20,878.08 and 3,530.48 is: 5,295.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.76 : 20,878.08 = 3,530.48 : x
  2. Step 2: Convert to fraction form
    13,918.76/20,878.08 = 3,530.48/x
  3. Step 3: Cross multiply
    13,918.76x = 20,878.08 × 3,530.48
  4. Step 4: Simplify right side
    13,918.76x = 73,709,643.88
  5. Step 5: Solve for x
    x = 73,709,643.88/13,918.76
  6. Step 6: Final answer
    x = 5,295.70

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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.