Home / 19,278.36-28,917.54-5,427.32

Finding the Fourth Proportional to 19,278.36, 28,917.54 and 5,427.32

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Solution

The fourth proportional to 19,278.36, 28,917.54 and 5,427.32 is: 8,140.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,278.36 : 28,917.54 = 5,427.32 : x
  2. Step 2: Convert to fraction form
    19,278.36/28,917.54 = 5,427.32/x
  3. Step 3: Cross multiply
    19,278.36x = 28,917.54 × 5,427.32
  4. Step 4: Simplify right side
    19,278.36x = 156,944,743.19
  5. Step 5: Solve for x
    x = 156,944,743.19/19,278.36
  6. Step 6: Final answer
    x = 8,140.98

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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.