Home / 20,695.47-28,559.93-11,742.99

Finding the Fourth Proportional to 20,695.47, 28,559.93 and 11,742.99

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Solution

The fourth proportional to 20,695.47, 28,559.93 and 11,742.99 is: 16,205.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.47 : 28,559.93 = 11,742.99 : x
  2. Step 2: Convert to fraction form
    20,695.47/28,559.93 = 11,742.99/x
  3. Step 3: Cross multiply
    20,695.47x = 28,559.93 × 11,742.99
  4. Step 4: Simplify right side
    20,695.47x = 335,378,913.68
  5. Step 5: Solve for x
    x = 335,378,913.68/20,695.47
  6. Step 6: Final answer
    x = 16,205.43

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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.