Home / 20,980.53-28,946.61-11,904.39

Finding the Fourth Proportional to 20,980.53, 28,946.61 and 11,904.39

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Solution

The fourth proportional to 20,980.53, 28,946.61 and 11,904.39 is: 16,424.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.53 : 28,946.61 = 11,904.39 : x
  2. Step 2: Convert to fraction form
    20,980.53/28,946.61 = 11,904.39/x
  3. Step 3: Cross multiply
    20,980.53x = 28,946.61 × 11,904.39
  4. Step 4: Simplify right side
    20,980.53x = 344,591,734.62
  5. Step 5: Solve for x
    x = 344,591,734.62/20,980.53
  6. Step 6: Final answer
    x = 16,424.36

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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.