Home / 12,918.50-19,377.62-8,555.48

Finding the Fourth Proportional to 12,918.50, 19,377.62 and 8,555.48

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Solution

The fourth proportional to 12,918.50, 19,377.62 and 8,555.48 is: 12,833.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.50 : 19,377.62 = 8,555.48 : x
  2. Step 2: Convert to fraction form
    12,918.50/19,377.62 = 8,555.48/x
  3. Step 3: Cross multiply
    12,918.50x = 19,377.62 × 8,555.48
  4. Step 4: Simplify right side
    12,918.50x = 165,784,840.36
  5. Step 5: Solve for x
    x = 165,784,840.36/12,918.50
  6. Step 6: Final answer
    x = 12,833.13

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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.