Home / 21,485.38-32,226.77-12,775.72

Finding the Fourth Proportional to 21,485.38, 32,226.77 and 12,775.72

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Solution

The fourth proportional to 21,485.38, 32,226.77 and 12,775.72 is: 19,162.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,485.38 : 32,226.77 = 12,775.72 : x
  2. Step 2: Convert to fraction form
    21,485.38/32,226.77 = 12,775.72/x
  3. Step 3: Cross multiply
    21,485.38x = 32,226.77 × 12,775.72
  4. Step 4: Simplify right side
    21,485.38x = 411,720,190.02
  5. Step 5: Solve for x
    x = 411,720,190.02/21,485.38
  6. Step 6: Final answer
    x = 19,162.81

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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.