Home / 20,579.31-30,865.39-5,784.72

Finding the Fourth Proportional to 20,579.31, 30,865.39 and 5,784.72

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Solution

The fourth proportional to 20,579.31, 30,865.39 and 5,784.72 is: 8,676.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.31 : 30,865.39 = 5,784.72 : x
  2. Step 2: Convert to fraction form
    20,579.31/30,865.39 = 5,784.72/x
  3. Step 3: Cross multiply
    20,579.31x = 30,865.39 × 5,784.72
  4. Step 4: Simplify right side
    20,579.31x = 178,547,508.63
  5. Step 5: Solve for x
    x = 178,547,508.63/20,579.31
  6. Step 6: Final answer
    x = 8,676.07

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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.