Home / 13,864.87-20,782.41-4,971.65

Finding the Fourth Proportional to 13,864.87, 20,782.41 and 4,971.65

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Solution

The fourth proportional to 13,864.87, 20,782.41 and 4,971.65 is: 7,452.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,864.87 : 20,782.41 = 4,971.65 : x
  2. Step 2: Convert to fraction form
    13,864.87/20,782.41 = 4,971.65/x
  3. Step 3: Cross multiply
    13,864.87x = 20,782.41 × 4,971.65
  4. Step 4: Simplify right side
    13,864.87x = 103,322,746.12
  5. Step 5: Solve for x
    x = 103,322,746.12/13,864.87
  6. Step 6: Final answer
    x = 7,452.12

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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.