Home / 21,607.08-32,409.66-12,379.56

Finding the Fourth Proportional to 21,607.08, 32,409.66 and 12,379.56

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Solution

The fourth proportional to 21,607.08, 32,409.66 and 12,379.56 is: 18,568.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,607.08 : 32,409.66 = 12,379.56 : x
  2. Step 2: Convert to fraction form
    21,607.08/32,409.66 = 12,379.56/x
  3. Step 3: Cross multiply
    21,607.08x = 32,409.66 × 12,379.56
  4. Step 4: Simplify right side
    21,607.08x = 401,217,330.55
  5. Step 5: Solve for x
    x = 401,217,330.55/21,607.08
  6. Step 6: Final answer
    x = 18,568.79

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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.