Home / 21,396.60-29,526.96-11,965.08

Finding the Fourth Proportional to 21,396.60, 29,526.96 and 11,965.08

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Solution

The fourth proportional to 21,396.60, 29,526.96 and 11,965.08 is: 16,511.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,396.60 : 29,526.96 = 11,965.08 : x
  2. Step 2: Convert to fraction form
    21,396.60/29,526.96 = 11,965.08/x
  3. Step 3: Cross multiply
    21,396.60x = 29,526.96 × 11,965.08
  4. Step 4: Simplify right side
    21,396.60x = 353,292,438.56
  5. Step 5: Solve for x
    x = 353,292,438.56/21,396.60
  6. Step 6: Final answer
    x = 16,511.62

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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.