Home / 21,580.13-32,357.23-8,438.69

Finding the Fourth Proportional to 21,580.13, 32,357.23 and 8,438.69

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Solution

The fourth proportional to 21,580.13, 32,357.23 and 8,438.69 is: 12,652.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,580.13 : 32,357.23 = 8,438.69 : x
  2. Step 2: Convert to fraction form
    21,580.13/32,357.23 = 8,438.69/x
  3. Step 3: Cross multiply
    21,580.13x = 32,357.23 × 8,438.69
  4. Step 4: Simplify right side
    21,580.13x = 273,052,693.03
  5. Step 5: Solve for x
    x = 273,052,693.03/21,580.13
  6. Step 6: Final answer
    x = 12,652.97

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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.