Home / 12,917.10-19,357.32-5,412.58

Finding the Fourth Proportional to 12,917.10, 19,357.32 and 5,412.58

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Solution

The fourth proportional to 12,917.10, 19,357.32 and 5,412.58 is: 8,111.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,917.10 : 19,357.32 = 5,412.58 : x
  2. Step 2: Convert to fraction form
    12,917.10/19,357.32 = 5,412.58/x
  3. Step 3: Cross multiply
    12,917.10x = 19,357.32 × 5,412.58
  4. Step 4: Simplify right side
    12,917.10x = 104,773,043.09
  5. Step 5: Solve for x
    x = 104,773,043.09/12,917.10
  6. Step 6: Final answer
    x = 8,111.19

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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.