Home / 20,956.84-28,919.36-11,523.60

Finding the Fourth Proportional to 20,956.84, 28,919.36 and 11,523.60

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Solution

The fourth proportional to 20,956.84, 28,919.36 and 11,523.60 is: 15,901.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.84 : 28,919.36 = 11,523.60 : x
  2. Step 2: Convert to fraction form
    20,956.84/28,919.36 = 11,523.60/x
  3. Step 3: Cross multiply
    20,956.84x = 28,919.36 × 11,523.60
  4. Step 4: Simplify right side
    20,956.84x = 333,255,136.90
  5. Step 5: Solve for x
    x = 333,255,136.90/20,956.84
  6. Step 6: Final answer
    x = 15,901.97

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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.