Home / 12,788.16-19,178.40-4,023.36

Finding the Fourth Proportional to 12,788.16, 19,178.40 and 4,023.36

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Solution

The fourth proportional to 12,788.16, 19,178.40 and 4,023.36 is: 6,033.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.16 : 19,178.40 = 4,023.36 : x
  2. Step 2: Convert to fraction form
    12,788.16/19,178.40 = 4,023.36/x
  3. Step 3: Cross multiply
    12,788.16x = 19,178.40 × 4,023.36
  4. Step 4: Simplify right side
    12,788.16x = 77,161,607.42
  5. Step 5: Solve for x
    x = 77,161,607.42/12,788.16
  6. Step 6: Final answer
    x = 6,033.83

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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.