Home / 13,278.63-19,917.94-4,391.57

Finding the Fourth Proportional to 13,278.63, 19,917.94 and 4,391.57

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Solution

The fourth proportional to 13,278.63, 19,917.94 and 4,391.57 is: 6,587.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.63 : 19,917.94 = 4,391.57 : x
  2. Step 2: Convert to fraction form
    13,278.63/19,917.94 = 4,391.57/x
  3. Step 3: Cross multiply
    13,278.63x = 19,917.94 × 4,391.57
  4. Step 4: Simplify right side
    13,278.63x = 87,471,045.70
  5. Step 5: Solve for x
    x = 87,471,045.70/13,278.63
  6. Step 6: Final answer
    x = 6,587.36

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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.