Home / 20,905.79-28,848.98-11,954.27

Finding the Fourth Proportional to 20,905.79, 28,848.98 and 11,954.27

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Solution

The fourth proportional to 20,905.79, 28,848.98 and 11,954.27 is: 16,496.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,905.79 : 28,848.98 = 11,954.27 : x
  2. Step 2: Convert to fraction form
    20,905.79/28,848.98 = 11,954.27/x
  3. Step 3: Cross multiply
    20,905.79x = 28,848.98 × 11,954.27
  4. Step 4: Simplify right side
    20,905.79x = 344,868,436.37
  5. Step 5: Solve for x
    x = 344,868,436.37/20,905.79
  6. Step 6: Final answer
    x = 16,496.32

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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.