Home / 20,705.58-28,573.56-11,274.12

Finding the Fourth Proportional to 20,705.58, 28,573.56 and 11,274.12

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Solution

The fourth proportional to 20,705.58, 28,573.56 and 11,274.12 is: 15,558.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.58 : 28,573.56 = 11,274.12 : x
  2. Step 2: Convert to fraction form
    20,705.58/28,573.56 = 11,274.12/x
  3. Step 3: Cross multiply
    20,705.58x = 28,573.56 × 11,274.12
  4. Step 4: Simplify right side
    20,705.58x = 322,141,744.27
  5. Step 5: Solve for x
    x = 322,141,744.27/20,705.58
  6. Step 6: Final answer
    x = 15,558.21

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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.