Home / 20,500.40-28,293.22-11,549.64

Finding the Fourth Proportional to 20,500.40, 28,293.22 and 11,549.64

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Solution

The fourth proportional to 20,500.40, 28,293.22 and 11,549.64 is: 15,940.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500.40 : 28,293.22 = 11,549.64 : x
  2. Step 2: Convert to fraction form
    20,500.40/28,293.22 = 11,549.64/x
  3. Step 3: Cross multiply
    20,500.40x = 28,293.22 × 11,549.64
  4. Step 4: Simplify right side
    20,500.40x = 326,776,505.44
  5. Step 5: Solve for x
    x = 326,776,505.44/20,500.40
  6. Step 6: Final answer
    x = 15,940.01

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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.