Home / 20,828.42-28,713.31-14,849.71

Finding the Fourth Proportional to 20,828.42, 28,713.31 and 14,849.71

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Solution

The fourth proportional to 20,828.42, 28,713.31 and 14,849.71 is: 20,471.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,828.42 : 28,713.31 = 14,849.71 : x
  2. Step 2: Convert to fraction form
    20,828.42/28,713.31 = 14,849.71/x
  3. Step 3: Cross multiply
    20,828.42x = 28,713.31 × 14,849.71
  4. Step 4: Simplify right side
    20,828.42x = 426,384,217.73
  5. Step 5: Solve for x
    x = 426,384,217.73/20,828.42
  6. Step 6: Final answer
    x = 20,471.28

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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.