Home / 25,784.43-35,579.32-15,709.20

Finding the Fourth Proportional to 25,784.43, 35,579.32 and 15,709.20

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Solution

The fourth proportional to 25,784.43, 35,579.32 and 15,709.20 is: 21,676.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,784.43 : 35,579.32 = 15,709.20 : x
  2. Step 2: Convert to fraction form
    25,784.43/35,579.32 = 15,709.20/x
  3. Step 3: Cross multiply
    25,784.43x = 35,579.32 × 15,709.20
  4. Step 4: Simplify right side
    25,784.43x = 558,922,653.74
  5. Step 5: Solve for x
    x = 558,922,653.74/25,784.43
  6. Step 6: Final answer
    x = 21,676.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.