Home / 20,836.69-28,754.81-11,884.64

Finding the Fourth Proportional to 20,836.69, 28,754.81 and 11,884.64

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Solution

The fourth proportional to 20,836.69, 28,754.81 and 11,884.64 is: 16,400.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.69 : 28,754.81 = 11,884.64 : x
  2. Step 2: Convert to fraction form
    20,836.69/28,754.81 = 11,884.64/x
  3. Step 3: Cross multiply
    20,836.69x = 28,754.81 × 11,884.64
  4. Step 4: Simplify right side
    20,836.69x = 341,740,541.64
  5. Step 5: Solve for x
    x = 341,740,541.64/20,836.69
  6. Step 6: Final answer
    x = 16,400.91

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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.