Home / 18,015.12-26,999.64-7,612.56

Finding the Fourth Proportional to 18,015.12, 26,999.64 and 7,612.56

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Solution

The fourth proportional to 18,015.12, 26,999.64 and 7,612.56 is: 11,409.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,015.12 : 26,999.64 = 7,612.56 : x
  2. Step 2: Convert to fraction form
    18,015.12/26,999.64 = 7,612.56/x
  3. Step 3: Cross multiply
    18,015.12x = 26,999.64 × 7,612.56
  4. Step 4: Simplify right side
    18,015.12x = 205,536,379.48
  5. Step 5: Solve for x
    x = 205,536,379.48/18,015.12
  6. Step 6: Final answer
    x = 11,409.10

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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.