Home / 21,202-29,257.28-11,771.12

Finding the Fourth Proportional to 21,202, 29,257.28 and 11,771.12

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Solution

The fourth proportional to 21,202, 29,257.28 and 11,771.12 is: 16,243.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,202 : 29,257.28 = 11,771.12 : x
  2. Step 2: Convert to fraction form
    21,202/29,257.28 = 11,771.12/x
  3. Step 3: Cross multiply
    21,202x = 29,257.28 × 11,771.12
  4. Step 4: Simplify right side
    21,202x = 344,390,953.75
  5. Step 5: Solve for x
    x = 344,390,953.75/21,202
  6. Step 6: Final answer
    x = 16,243.32

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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.