Home / 20,487.64-30,736.74-11,125.25

Finding the Fourth Proportional to 20,487.64, 30,736.74 and 11,125.25

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Solution

The fourth proportional to 20,487.64, 30,736.74 and 11,125.25 is: 16,690.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487.64 : 30,736.74 = 11,125.25 : x
  2. Step 2: Convert to fraction form
    20,487.64/30,736.74 = 11,125.25/x
  3. Step 3: Cross multiply
    20,487.64x = 30,736.74 × 11,125.25
  4. Step 4: Simplify right side
    20,487.64x = 341,954,061.59
  5. Step 5: Solve for x
    x = 341,954,061.59/20,487.64
  6. Step 6: Final answer
    x = 16,690.75

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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.