Home / 21,310.23-29,396.08-13,338.62

Finding the Fourth Proportional to 21,310.23, 29,396.08 and 13,338.62

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Solution

The fourth proportional to 21,310.23, 29,396.08 and 13,338.62 is: 18,399.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.23 : 29,396.08 = 13,338.62 : x
  2. Step 2: Convert to fraction form
    21,310.23/29,396.08 = 13,338.62/x
  3. Step 3: Cross multiply
    21,310.23x = 29,396.08 × 13,338.62
  4. Step 4: Simplify right side
    21,310.23x = 392,102,926.94
  5. Step 5: Solve for x
    x = 392,102,926.94/21,310.23
  6. Step 6: Final answer
    x = 18,399.75

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1.5x scale

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.