Home / 20,453.74-28,240.11-15,076.82

Finding the Fourth Proportional to 20,453.74, 28,240.11 and 15,076.82

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Solution

The fourth proportional to 20,453.74, 28,240.11 and 15,076.82 is: 20,816.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.74 : 28,240.11 = 15,076.82 : x
  2. Step 2: Convert to fraction form
    20,453.74/28,240.11 = 15,076.82/x
  3. Step 3: Cross multiply
    20,453.74x = 28,240.11 × 15,076.82
  4. Step 4: Simplify right side
    20,453.74x = 425,771,055.25
  5. Step 5: Solve for x
    x = 425,771,055.25/20,453.74
  6. Step 6: Final answer
    x = 20,816.29

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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.