Home / 13,278.91-19,918.33-3,417.37

Finding the Fourth Proportional to 13,278.91, 19,918.33 and 3,417.37

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Solution

The fourth proportional to 13,278.91, 19,918.33 and 3,417.37 is: 5,126.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.91 : 19,918.33 = 3,417.37 : x
  2. Step 2: Convert to fraction form
    13,278.91/19,918.33 = 3,417.37/x
  3. Step 3: Cross multiply
    13,278.91x = 19,918.33 × 3,417.37
  4. Step 4: Simplify right side
    13,278.91x = 68,068,303.39
  5. Step 5: Solve for x
    x = 68,068,303.39/13,278.91
  6. Step 6: Final answer
    x = 5,126.05

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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.