Home / 12,911.78-19,361.09-4,590.56

Finding the Fourth Proportional to 12,911.78, 19,361.09 and 4,590.56

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Solution

The fourth proportional to 12,911.78, 19,361.09 and 4,590.56 is: 6,883.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.78 : 19,361.09 = 4,590.56 : x
  2. Step 2: Convert to fraction form
    12,911.78/19,361.09 = 4,590.56/x
  3. Step 3: Cross multiply
    12,911.78x = 19,361.09 × 4,590.56
  4. Step 4: Simplify right side
    12,911.78x = 88,878,305.19
  5. Step 5: Solve for x
    x = 88,878,305.19/12,911.78
  6. Step 6: Final answer
    x = 6,883.50

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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.