Home / 20,601.05-28,430.69-11,649.38

Finding the Fourth Proportional to 20,601.05, 28,430.69 and 11,649.38

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Solution

The fourth proportional to 20,601.05, 28,430.69 and 11,649.38 is: 16,076.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.05 : 28,430.69 = 11,649.38 : x
  2. Step 2: Convert to fraction form
    20,601.05/28,430.69 = 11,649.38/x
  3. Step 3: Cross multiply
    20,601.05x = 28,430.69 × 11,649.38
  4. Step 4: Simplify right side
    20,601.05x = 331,199,711.07
  5. Step 5: Solve for x
    x = 331,199,711.07/20,601.05
  6. Step 6: Final answer
    x = 16,076.84

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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.