Home / 12,519.72-18,779.58-3,285

Finding the Fourth Proportional to 12,519.72, 18,779.58 and 3,285

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Solution

The fourth proportional to 12,519.72, 18,779.58 and 3,285 is: 4,927.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.72 : 18,779.58 = 3,285 : x
  2. Step 2: Convert to fraction form
    12,519.72/18,779.58 = 3,285/x
  3. Step 3: Cross multiply
    12,519.72x = 18,779.58 × 3,285
  4. Step 4: Simplify right side
    12,519.72x = 61,690,920.30
  5. Step 5: Solve for x
    x = 61,690,920.30/12,519.72
  6. Step 6: Final answer
    x = 4,927.50

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1.5x scale

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.