Home / 20,205.55-27,874.01-15,698.45

Finding the Fourth Proportional to 20,205.55, 27,874.01 and 15,698.45

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Solution

The fourth proportional to 20,205.55, 27,874.01 and 15,698.45 is: 21,656.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,205.55 : 27,874.01 = 15,698.45 : x
  2. Step 2: Convert to fraction form
    20,205.55/27,874.01 = 15,698.45/x
  3. Step 3: Cross multiply
    20,205.55x = 27,874.01 × 15,698.45
  4. Step 4: Simplify right side
    20,205.55x = 437,578,673.79
  5. Step 5: Solve for x
    x = 437,578,673.79/20,205.55
  6. Step 6: Final answer
    x = 21,656.37

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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.