Home / 12,977.28-19,467-7,815.96

Finding the Fourth Proportional to 12,977.28, 19,467 and 7,815.96

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Solution

The fourth proportional to 12,977.28, 19,467 and 7,815.96 is: 11,724.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.28 : 19,467 = 7,815.96 : x
  2. Step 2: Convert to fraction form
    12,977.28/19,467 = 7,815.96/x
  3. Step 3: Cross multiply
    12,977.28x = 19,467 × 7,815.96
  4. Step 4: Simplify right side
    12,977.28x = 152,153,293.32
  5. Step 5: Solve for x
    x = 152,153,293.32/12,977.28
  6. Step 6: Final answer
    x = 11,724.59

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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.