Home / 20,756.07-28,649.48-11,808.57

Finding the Fourth Proportional to 20,756.07, 28,649.48 and 11,808.57

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Solution

The fourth proportional to 20,756.07, 28,649.48 and 11,808.57 is: 16,299.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.07 : 28,649.48 = 11,808.57 : x
  2. Step 2: Convert to fraction form
    20,756.07/28,649.48 = 11,808.57/x
  3. Step 3: Cross multiply
    20,756.07x = 28,649.48 × 11,808.57
  4. Step 4: Simplify right side
    20,756.07x = 338,309,331.00
  5. Step 5: Solve for x
    x = 338,309,331.00/20,756.07
  6. Step 6: Final answer
    x = 16,299.30

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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.