Home / 20,696.70-28,567.44-13,527.71

Finding the Fourth Proportional to 20,696.70, 28,567.44 and 13,527.71

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Solution

The fourth proportional to 20,696.70, 28,567.44 and 13,527.71 is: 18,672.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.70 : 28,567.44 = 13,527.71 : x
  2. Step 2: Convert to fraction form
    20,696.70/28,567.44 = 13,527.71/x
  3. Step 3: Cross multiply
    20,696.70x = 28,567.44 × 13,527.71
  4. Step 4: Simplify right side
    20,696.70x = 386,451,900.93
  5. Step 5: Solve for x
    x = 386,451,900.93/20,696.70
  6. Step 6: Final answer
    x = 18,672.15

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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.