Home / 13,278.76-19,912.50-5,878

Finding the Fourth Proportional to 13,278.76, 19,912.50 and 5,878

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Solution

The fourth proportional to 13,278.76, 19,912.50 and 5,878 is: 8,814.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.76 : 19,912.50 = 5,878 : x
  2. Step 2: Convert to fraction form
    13,278.76/19,912.50 = 5,878/x
  3. Step 3: Cross multiply
    13,278.76x = 19,912.50 × 5,878
  4. Step 4: Simplify right side
    13,278.76x = 117,045,675
  5. Step 5: Solve for x
    x = 117,045,675/13,278.76
  6. Step 6: Final answer
    x = 8,814.50

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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.