Home / 18,215.96-27,330.60-7,688.60

Finding the Fourth Proportional to 18,215.96, 27,330.60 and 7,688.60

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Solution

The fourth proportional to 18,215.96, 27,330.60 and 7,688.60 is: 11,535.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215.96 : 27,330.60 = 7,688.60 : x
  2. Step 2: Convert to fraction form
    18,215.96/27,330.60 = 7,688.60/x
  3. Step 3: Cross multiply
    18,215.96x = 27,330.60 × 7,688.60
  4. Step 4: Simplify right side
    18,215.96x = 210,134,051.16
  5. Step 5: Solve for x
    x = 210,134,051.16/18,215.96
  6. Step 6: Final answer
    x = 11,535.71

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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.