Home / 13,278.53-19,917.81-3,417.83

Finding the Fourth Proportional to 13,278.53, 19,917.81 and 3,417.83

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Solution

The fourth proportional to 13,278.53, 19,917.81 and 3,417.83 is: 5,126.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.53 : 19,917.81 = 3,417.83 : x
  2. Step 2: Convert to fraction form
    13,278.53/19,917.81 = 3,417.83/x
  3. Step 3: Cross multiply
    13,278.53x = 19,917.81 × 3,417.83
  4. Step 4: Simplify right side
    13,278.53x = 68,075,688.55
  5. Step 5: Solve for x
    x = 68,075,688.55/13,278.53
  6. Step 6: Final answer
    x = 5,126.75

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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.