Home / 20,656.28-28,505.69-11,704.39

Finding the Fourth Proportional to 20,656.28, 28,505.69 and 11,704.39

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Solution

The fourth proportional to 20,656.28, 28,505.69 and 11,704.39 is: 16,152.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.28 : 28,505.69 = 11,704.39 : x
  2. Step 2: Convert to fraction form
    20,656.28/28,505.69 = 11,704.39/x
  3. Step 3: Cross multiply
    20,656.28x = 28,505.69 × 11,704.39
  4. Step 4: Simplify right side
    20,656.28x = 333,641,570.45
  5. Step 5: Solve for x
    x = 333,641,570.45/20,656.28
  6. Step 6: Final answer
    x = 16,152.07

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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.