Home / 20,644.24-28,489.06-11,213

Finding the Fourth Proportional to 20,644.24, 28,489.06 and 11,213

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Solution

The fourth proportional to 20,644.24, 28,489.06 and 11,213 is: 15,473.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644.24 : 28,489.06 = 11,213 : x
  2. Step 2: Convert to fraction form
    20,644.24/28,489.06 = 11,213/x
  3. Step 3: Cross multiply
    20,644.24x = 28,489.06 × 11,213
  4. Step 4: Simplify right side
    20,644.24x = 319,447,829.78
  5. Step 5: Solve for x
    x = 319,447,829.78/20,644.24
  6. Step 6: Final answer
    x = 15,473.94

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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.