Home / 13,911.92-20,869.93-4,049.90

Finding the Fourth Proportional to 13,911.92, 20,869.93 and 4,049.90

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Solution

The fourth proportional to 13,911.92, 20,869.93 and 4,049.90 is: 6,075.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.92 : 20,869.93 = 4,049.90 : x
  2. Step 2: Convert to fraction form
    13,911.92/20,869.93 = 4,049.90/x
  3. Step 3: Cross multiply
    13,911.92x = 20,869.93 × 4,049.90
  4. Step 4: Simplify right side
    13,911.92x = 84,521,129.51
  5. Step 5: Solve for x
    x = 84,521,129.51/13,911.92
  6. Step 6: Final answer
    x = 6,075.45

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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.