Home / 20,705.96-28,574.10-11,274.44

Finding the Fourth Proportional to 20,705.96, 28,574.10 and 11,274.44

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Solution

The fourth proportional to 20,705.96, 28,574.10 and 11,274.44 is: 15,558.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.96 : 28,574.10 = 11,274.44 : x
  2. Step 2: Convert to fraction form
    20,705.96/28,574.10 = 11,274.44/x
  3. Step 3: Cross multiply
    20,705.96x = 28,574.10 × 11,274.44
  4. Step 4: Simplify right side
    20,705.96x = 322,156,976.00
  5. Step 5: Solve for x
    x = 322,156,976.00/20,705.96
  6. Step 6: Final answer
    x = 15,558.66

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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.