Home / 15,863.85-21,847.73-15,519.47

Finding the Fourth Proportional to 15,863.85, 21,847.73 and 15,519.47

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Solution

The fourth proportional to 15,863.85, 21,847.73 and 15,519.47 is: 21,373.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,863.85 : 21,847.73 = 15,519.47 : x
  2. Step 2: Convert to fraction form
    15,863.85/21,847.73 = 15,519.47/x
  3. Step 3: Cross multiply
    15,863.85x = 21,847.73 × 15,519.47
  4. Step 4: Simplify right side
    15,863.85x = 339,065,003.47
  5. Step 5: Solve for x
    x = 339,065,003.47/15,863.85
  6. Step 6: Final answer
    x = 21,373.44

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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.