Home / 14,270.12-21,405.20-3,881.88

Finding the Fourth Proportional to 14,270.12, 21,405.20 and 3,881.88

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Solution

The fourth proportional to 14,270.12, 21,405.20 and 3,881.88 is: 5,822.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,270.12 : 21,405.20 = 3,881.88 : x
  2. Step 2: Convert to fraction form
    14,270.12/21,405.20 = 3,881.88/x
  3. Step 3: Cross multiply
    14,270.12x = 21,405.20 × 3,881.88
  4. Step 4: Simplify right side
    14,270.12x = 83,092,417.78
  5. Step 5: Solve for x
    x = 83,092,417.78/14,270.12
  6. Step 6: Final answer
    x = 5,822.83

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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.