Home / 20,609.40-28,441.49-11,656.47

Finding the Fourth Proportional to 20,609.40, 28,441.49 and 11,656.47

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Solution

The fourth proportional to 20,609.40, 28,441.49 and 11,656.47 is: 16,086.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.40 : 28,441.49 = 11,656.47 : x
  2. Step 2: Convert to fraction form
    20,609.40/28,441.49 = 11,656.47/x
  3. Step 3: Cross multiply
    20,609.40x = 28,441.49 × 11,656.47
  4. Step 4: Simplify right side
    20,609.40x = 331,527,316.66
  5. Step 5: Solve for x
    x = 331,527,316.66/20,609.40
  6. Step 6: Final answer
    x = 16,086.22

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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.