Home / 20,586.77-28,406.67-11,634.20

Finding the Fourth Proportional to 20,586.77, 28,406.67 and 11,634.20

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Solution

The fourth proportional to 20,586.77, 28,406.67 and 11,634.20 is: 16,053.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.77 : 28,406.67 = 11,634.20 : x
  2. Step 2: Convert to fraction form
    20,586.77/28,406.67 = 11,634.20/x
  3. Step 3: Cross multiply
    20,586.77x = 28,406.67 × 11,634.20
  4. Step 4: Simplify right side
    20,586.77x = 330,488,738.08
  5. Step 5: Solve for x
    x = 330,488,738.08/20,586.77
  6. Step 6: Final answer
    x = 16,053.46

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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.