Home / 20,653.58-28,499.64-11,700.92

Finding the Fourth Proportional to 20,653.58, 28,499.64 and 11,700.92

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Solution

The fourth proportional to 20,653.58, 28,499.64 and 11,700.92 is: 16,145.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.58 : 28,499.64 = 11,700.92 : x
  2. Step 2: Convert to fraction form
    20,653.58/28,499.64 = 11,700.92/x
  3. Step 3: Cross multiply
    20,653.58x = 28,499.64 × 11,700.92
  4. Step 4: Simplify right side
    20,653.58x = 333,472,007.67
  5. Step 5: Solve for x
    x = 333,472,007.67/20,653.58
  6. Step 6: Final answer
    x = 16,145.97

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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.