Home / 20,642.05-28,497.83-13,588.97

Finding the Fourth Proportional to 20,642.05, 28,497.83 and 13,588.97

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Solution

The fourth proportional to 20,642.05, 28,497.83 and 13,588.97 is: 18,760.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,642.05 : 28,497.83 = 13,588.97 : x
  2. Step 2: Convert to fraction form
    20,642.05/28,497.83 = 13,588.97/x
  3. Step 3: Cross multiply
    20,642.05x = 28,497.83 × 13,588.97
  4. Step 4: Simplify right side
    20,642.05x = 387,256,156.94
  5. Step 5: Solve for x
    x = 387,256,156.94/20,642.05
  6. Step 6: Final answer
    x = 18,760.55

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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.