Home / 20,957.34-28,914.06-11,881.72

Finding the Fourth Proportional to 20,957.34, 28,914.06 and 11,881.72

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Solution

The fourth proportional to 20,957.34, 28,914.06 and 11,881.72 is: 16,392.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,957.34 : 28,914.06 = 11,881.72 : x
  2. Step 2: Convert to fraction form
    20,957.34/28,914.06 = 11,881.72/x
  3. Step 3: Cross multiply
    20,957.34x = 28,914.06 × 11,881.72
  4. Step 4: Simplify right side
    20,957.34x = 343,548,845.68
  5. Step 5: Solve for x
    x = 343,548,845.68/20,957.34
  6. Step 6: Final answer
    x = 16,392.77

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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.