Home / 18,420.35-27,611.48-10,505.84

Finding the Fourth Proportional to 18,420.35, 27,611.48 and 10,505.84

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Solution

The fourth proportional to 18,420.35, 27,611.48 and 10,505.84 is: 15,747.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.35 : 27,611.48 = 10,505.84 : x
  2. Step 2: Convert to fraction form
    18,420.35/27,611.48 = 10,505.84/x
  3. Step 3: Cross multiply
    18,420.35x = 27,611.48 × 10,505.84
  4. Step 4: Simplify right side
    18,420.35x = 290,081,679.25
  5. Step 5: Solve for x
    x = 290,081,679.25/18,420.35
  6. Step 6: Final answer
    x = 15,747.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.