Home / 13,290.72-19,935.36-4,056

Finding the Fourth Proportional to 13,290.72, 19,935.36 and 4,056

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Solution

The fourth proportional to 13,290.72, 19,935.36 and 4,056 is: 6,083.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.72 : 19,935.36 = 4,056 : x
  2. Step 2: Convert to fraction form
    13,290.72/19,935.36 = 4,056/x
  3. Step 3: Cross multiply
    13,290.72x = 19,935.36 × 4,056
  4. Step 4: Simplify right side
    13,290.72x = 80,857,820.16
  5. Step 5: Solve for x
    x = 80,857,820.16/13,290.72
  6. Step 6: Final answer
    x = 6,083.78

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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.