Home / 18,742.50-25,858.62-11,190.06

Finding the Fourth Proportional to 18,742.50, 25,858.62 and 11,190.06

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Solution

The fourth proportional to 18,742.50, 25,858.62 and 11,190.06 is: 15,438.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.50 : 25,858.62 = 11,190.06 : x
  2. Step 2: Convert to fraction form
    18,742.50/25,858.62 = 11,190.06/x
  3. Step 3: Cross multiply
    18,742.50x = 25,858.62 × 11,190.06
  4. Step 4: Simplify right side
    18,742.50x = 289,359,509.32
  5. Step 5: Solve for x
    x = 289,359,509.32/18,742.50
  6. Step 6: Final answer
    x = 15,438.68

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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.