Home / 20,760.09-28,653.53-13,204.95

Finding the Fourth Proportional to 20,760.09, 28,653.53 and 13,204.95

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Solution

The fourth proportional to 20,760.09, 28,653.53 and 13,204.95 is: 18,225.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.09 : 28,653.53 = 13,204.95 : x
  2. Step 2: Convert to fraction form
    20,760.09/28,653.53 = 13,204.95/x
  3. Step 3: Cross multiply
    20,760.09x = 28,653.53 × 13,204.95
  4. Step 4: Simplify right side
    20,760.09x = 378,368,430.97
  5. Step 5: Solve for x
    x = 378,368,430.97/20,760.09
  6. Step 6: Final answer
    x = 18,225.76

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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.