Home / 21,157.40-29,199.24-11,725.94

Finding the Fourth Proportional to 21,157.40, 29,199.24 and 11,725.94

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Solution

The fourth proportional to 21,157.40, 29,199.24 and 11,725.94 is: 16,182.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.40 : 29,199.24 = 11,725.94 : x
  2. Step 2: Convert to fraction form
    21,157.40/29,199.24 = 11,725.94/x
  3. Step 3: Cross multiply
    21,157.40x = 29,199.24 × 11,725.94
  4. Step 4: Simplify right side
    21,157.40x = 342,388,536.29
  5. Step 5: Solve for x
    x = 342,388,536.29/21,157.40
  6. Step 6: Final answer
    x = 16,182.92

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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.