Home / 20,633.79-28,472.67-12,674.73

Finding the Fourth Proportional to 20,633.79, 28,472.67 and 12,674.73

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Solution

The fourth proportional to 20,633.79, 28,472.67 and 12,674.73 is: 17,489.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.79 : 28,472.67 = 12,674.73 : x
  2. Step 2: Convert to fraction form
    20,633.79/28,472.67 = 12,674.73/x
  3. Step 3: Cross multiply
    20,633.79x = 28,472.67 × 12,674.73
  4. Step 4: Simplify right side
    20,633.79x = 360,883,404.63
  5. Step 5: Solve for x
    x = 360,883,404.63/20,633.79
  6. Step 6: Final answer
    x = 17,489.92

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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.