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Finding the Fourth Proportional to 20,672.52, 28,527.49 and 12,713.46

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Solution

The fourth proportional to 20,672.52, 28,527.49 and 12,713.46 is: 17,544.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.52 : 28,527.49 = 12,713.46 : x
  2. Step 2: Convert to fraction form
    20,672.52/28,527.49 = 12,713.46/x
  3. Step 3: Cross multiply
    20,672.52x = 28,527.49 × 12,713.46
  4. Step 4: Simplify right side
    20,672.52x = 362,683,103.02
  5. Step 5: Solve for x
    x = 362,683,103.02/20,672.52
  6. Step 6: Final answer
    x = 17,544.21

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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.