Home / 20,021.27-27,609.30-15,543.41

Finding the Fourth Proportional to 20,021.27, 27,609.30 and 15,543.41

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Solution

The fourth proportional to 20,021.27, 27,609.30 and 15,543.41 is: 21,434.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.27 : 27,609.30 = 15,543.41 : x
  2. Step 2: Convert to fraction form
    20,021.27/27,609.30 = 15,543.41/x
  3. Step 3: Cross multiply
    20,021.27x = 27,609.30 × 15,543.41
  4. Step 4: Simplify right side
    20,021.27x = 429,142,531.67
  5. Step 5: Solve for x
    x = 429,142,531.67/20,021.27
  6. Step 6: Final answer
    x = 21,434.34

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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.