Home / 20,523.20-30,736.20-13,913.60

Finding the Fourth Proportional to 20,523.20, 30,736.20 and 13,913.60

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Solution

The fourth proportional to 20,523.20, 30,736.20 and 13,913.60 is: 20,837.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,523.20 : 30,736.20 = 13,913.60 : x
  2. Step 2: Convert to fraction form
    20,523.20/30,736.20 = 13,913.60/x
  3. Step 3: Cross multiply
    20,523.20x = 30,736.20 × 13,913.60
  4. Step 4: Simplify right side
    20,523.20x = 427,651,192.32
  5. Step 5: Solve for x
    x = 427,651,192.32/20,523.20
  6. Step 6: Final answer
    x = 20,837.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.