Home / 13,261.95-19,890.11-3,899.42

Finding the Fourth Proportional to 13,261.95, 19,890.11 and 3,899.42

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Solution

The fourth proportional to 13,261.95, 19,890.11 and 3,899.42 is: 5,848.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,261.95 : 19,890.11 = 3,899.42 : x
  2. Step 2: Convert to fraction form
    13,261.95/19,890.11 = 3,899.42/x
  3. Step 3: Cross multiply
    13,261.95x = 19,890.11 × 3,899.42
  4. Step 4: Simplify right side
    13,261.95x = 77,559,892.74
  5. Step 5: Solve for x
    x = 77,559,892.74/13,261.95
  6. Step 6: Final answer
    x = 5,848.30

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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.