Home / 21,299.89-29,393.19-13,346.50

Finding the Fourth Proportional to 21,299.89, 29,393.19 and 13,346.50

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Solution

The fourth proportional to 21,299.89, 29,393.19 and 13,346.50 is: 18,417.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,299.89 : 29,393.19 = 13,346.50 : x
  2. Step 2: Convert to fraction form
    21,299.89/29,393.19 = 13,346.50/x
  3. Step 3: Cross multiply
    21,299.89x = 29,393.19 × 13,346.50
  4. Step 4: Simplify right side
    21,299.89x = 392,296,136.85
  5. Step 5: Solve for x
    x = 392,296,136.85/21,299.89
  6. Step 6: Final answer
    x = 18,417.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.