Home / 12,977.78-19,467.75-7,816.46

Finding the Fourth Proportional to 12,977.78, 19,467.75 and 7,816.46

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Solution

The fourth proportional to 12,977.78, 19,467.75 and 7,816.46 is: 11,725.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.78 : 19,467.75 = 7,816.46 : x
  2. Step 2: Convert to fraction form
    12,977.78/19,467.75 = 7,816.46/x
  3. Step 3: Cross multiply
    12,977.78x = 19,467.75 × 7,816.46
  4. Step 4: Simplify right side
    12,977.78x = 152,168,889.17
  5. Step 5: Solve for x
    x = 152,168,889.17/12,977.78
  6. Step 6: Final answer
    x = 11,725.34

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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.