Home / 13,278.47-19,918.73-3,417.84

Finding the Fourth Proportional to 13,278.47, 19,918.73 and 3,417.84

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Solution

The fourth proportional to 13,278.47, 19,918.73 and 3,417.84 is: 5,127.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.47 : 19,918.73 = 3,417.84 : x
  2. Step 2: Convert to fraction form
    13,278.47/19,918.73 = 3,417.84/x
  3. Step 3: Cross multiply
    13,278.47x = 19,918.73 × 3,417.84
  4. Step 4: Simplify right side
    13,278.47x = 68,079,032.14
  5. Step 5: Solve for x
    x = 68,079,032.14/13,278.47
  6. Step 6: Final answer
    x = 5,127.02

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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.