Home / 20,628.59-28,465.97-11,677.10

Finding the Fourth Proportional to 20,628.59, 28,465.97 and 11,677.10

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Solution

The fourth proportional to 20,628.59, 28,465.97 and 11,677.10 is: 16,113.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.59 : 28,465.97 = 11,677.10 : x
  2. Step 2: Convert to fraction form
    20,628.59/28,465.97 = 11,677.10/x
  3. Step 3: Cross multiply
    20,628.59x = 28,465.97 × 11,677.10
  4. Step 4: Simplify right side
    20,628.59x = 332,399,777.57
  5. Step 5: Solve for x
    x = 332,399,777.57/20,628.59
  6. Step 6: Final answer
    x = 16,113.55

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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.