Home / 18,575.87-25,630.79-11,857.21

Finding the Fourth Proportional to 18,575.87, 25,630.79 and 11,857.21

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Solution

The fourth proportional to 18,575.87, 25,630.79 and 11,857.21 is: 16,360.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,575.87 : 25,630.79 = 11,857.21 : x
  2. Step 2: Convert to fraction form
    18,575.87/25,630.79 = 11,857.21/x
  3. Step 3: Cross multiply
    18,575.87x = 25,630.79 × 11,857.21
  4. Step 4: Simplify right side
    18,575.87x = 303,909,536.13
  5. Step 5: Solve for x
    x = 303,909,536.13/18,575.87
  6. Step 6: Final answer
    x = 16,360.45

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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.