Home / 25,815.75-38,718.99-6,840.51

Finding the Fourth Proportional to 25,815.75, 38,718.99 and 6,840.51

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Solution

The fourth proportional to 25,815.75, 38,718.99 and 6,840.51 is: 10,259.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,815.75 : 38,718.99 = 6,840.51 : x
  2. Step 2: Convert to fraction form
    25,815.75/38,718.99 = 6,840.51/x
  3. Step 3: Cross multiply
    25,815.75x = 38,718.99 × 6,840.51
  4. Step 4: Simplify right side
    25,815.75x = 264,857,638.28
  5. Step 5: Solve for x
    x = 264,857,638.28/25,815.75
  6. Step 6: Final answer
    x = 10,259.54

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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.