Home / 18,259.70-25,191.66-11,980.58

Finding the Fourth Proportional to 18,259.70, 25,191.66 and 11,980.58

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Solution

The fourth proportional to 18,259.70, 25,191.66 and 11,980.58 is: 16,528.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,259.70 : 25,191.66 = 11,980.58 : x
  2. Step 2: Convert to fraction form
    18,259.70/25,191.66 = 11,980.58/x
  3. Step 3: Cross multiply
    18,259.70x = 25,191.66 × 11,980.58
  4. Step 4: Simplify right side
    18,259.70x = 301,810,697.96
  5. Step 5: Solve for x
    x = 301,810,697.96/18,259.70
  6. Step 6: Final answer
    x = 16,528.79

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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.