Home / 20,824.35-28,737.57-11,392.89

Finding the Fourth Proportional to 20,824.35, 28,737.57 and 11,392.89

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Solution

The fourth proportional to 20,824.35, 28,737.57 and 11,392.89 is: 15,722.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.35 : 28,737.57 = 11,392.89 : x
  2. Step 2: Convert to fraction form
    20,824.35/28,737.57 = 11,392.89/x
  3. Step 3: Cross multiply
    20,824.35x = 28,737.57 × 11,392.89
  4. Step 4: Simplify right side
    20,824.35x = 327,403,973.88
  5. Step 5: Solve for x
    x = 327,403,973.88/20,824.35
  6. Step 6: Final answer
    x = 15,722.17

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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.