Home / 13,278.42-19,917.59-3,416.87

Finding the Fourth Proportional to 13,278.42, 19,917.59 and 3,416.87

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Solution

The fourth proportional to 13,278.42, 19,917.59 and 3,416.87 is: 5,125.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.42 : 19,917.59 = 3,416.87 : x
  2. Step 2: Convert to fraction form
    13,278.42/19,917.59 = 3,416.87/x
  3. Step 3: Cross multiply
    13,278.42x = 19,917.59 × 3,416.87
  4. Step 4: Simplify right side
    13,278.42x = 68,055,699.07
  5. Step 5: Solve for x
    x = 68,055,699.07/13,278.42
  6. Step 6: Final answer
    x = 5,125.29

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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.