Home / 20,406.58-28,162.68-11,453.52

Finding the Fourth Proportional to 20,406.58, 28,162.68 and 11,453.52

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Solution

The fourth proportional to 20,406.58, 28,162.68 and 11,453.52 is: 15,806.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406.58 : 28,162.68 = 11,453.52 : x
  2. Step 2: Convert to fraction form
    20,406.58/28,162.68 = 11,453.52/x
  3. Step 3: Cross multiply
    20,406.58x = 28,162.68 × 11,453.52
  4. Step 4: Simplify right side
    20,406.58x = 322,561,818.63
  5. Step 5: Solve for x
    x = 322,561,818.63/20,406.58
  6. Step 6: Final answer
    x = 15,806.76

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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.