Home / 21,089.57-29,102.69-11,529.27

Finding the Fourth Proportional to 21,089.57, 29,102.69 and 11,529.27

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Solution

The fourth proportional to 21,089.57, 29,102.69 and 11,529.27 is: 15,909.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.57 : 29,102.69 = 11,529.27 : x
  2. Step 2: Convert to fraction form
    21,089.57/29,102.69 = 11,529.27/x
  3. Step 3: Cross multiply
    21,089.57x = 29,102.69 × 11,529.27
  4. Step 4: Simplify right side
    21,089.57x = 335,532,713.09
  5. Step 5: Solve for x
    x = 335,532,713.09/21,089.57
  6. Step 6: Final answer
    x = 15,909.89

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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.