Home / 12,778.62-19,158.31-8,606.91

Finding the Fourth Proportional to 12,778.62, 19,158.31 and 8,606.91

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Solution

The fourth proportional to 12,778.62, 19,158.31 and 8,606.91 is: 12,903.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.62 : 19,158.31 = 8,606.91 : x
  2. Step 2: Convert to fraction form
    12,778.62/19,158.31 = 8,606.91/x
  3. Step 3: Cross multiply
    12,778.62x = 19,158.31 × 8,606.91
  4. Step 4: Simplify right side
    12,778.62x = 164,893,849.92
  5. Step 5: Solve for x
    x = 164,893,849.92/12,778.62
  6. Step 6: Final answer
    x = 12,903.89

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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.