Home / 13,278.54-19,917.82-3,417.84

Finding the Fourth Proportional to 13,278.54, 19,917.82 and 3,417.84

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Solution

The fourth proportional to 13,278.54, 19,917.82 and 3,417.84 is: 5,126.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.54 : 19,917.82 = 3,417.84 : x
  2. Step 2: Convert to fraction form
    13,278.54/19,917.82 = 3,417.84/x
  3. Step 3: Cross multiply
    13,278.54x = 19,917.82 × 3,417.84
  4. Step 4: Simplify right side
    13,278.54x = 68,075,921.91
  5. Step 5: Solve for x
    x = 68,075,921.91/13,278.54
  6. Step 6: Final answer
    x = 5,126.76

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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.