Home / 20,656.45-28,504.73-11,224.94

Finding the Fourth Proportional to 20,656.45, 28,504.73 and 11,224.94

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Solution

The fourth proportional to 20,656.45, 28,504.73 and 11,224.94 is: 15,489.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.45 : 28,504.73 = 11,224.94 : x
  2. Step 2: Convert to fraction form
    20,656.45/28,504.73 = 11,224.94/x
  3. Step 3: Cross multiply
    20,656.45x = 28,504.73 × 11,224.94
  4. Step 4: Simplify right side
    20,656.45x = 319,963,827.84
  5. Step 5: Solve for x
    x = 319,963,827.84/20,656.45
  6. Step 6: Final answer
    x = 15,489.78

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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.