Home / 12,788.42-19,184.46-4,020.38

Finding the Fourth Proportional to 12,788.42, 19,184.46 and 4,020.38

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Solution

The fourth proportional to 12,788.42, 19,184.46 and 4,020.38 is: 6,031.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.42 : 19,184.46 = 4,020.38 : x
  2. Step 2: Convert to fraction form
    12,788.42/19,184.46 = 4,020.38/x
  3. Step 3: Cross multiply
    12,788.42x = 19,184.46 × 4,020.38
  4. Step 4: Simplify right side
    12,788.42x = 77,128,819.29
  5. Step 5: Solve for x
    x = 77,128,819.29/12,788.42
  6. Step 6: Final answer
    x = 6,031.15

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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.