Home / 20,728.99-31,098.85-5,939.00

Finding the Fourth Proportional to 20,728.99, 31,098.85 and 5,939.00

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Solution

The fourth proportional to 20,728.99, 31,098.85 and 5,939.00 is: 8,910.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728.99 : 31,098.85 = 5,939.00 : x
  2. Step 2: Convert to fraction form
    20,728.99/31,098.85 = 5,939.00/x
  3. Step 3: Cross multiply
    20,728.99x = 31,098.85 × 5,939.00
  4. Step 4: Simplify right side
    20,728.99x = 184,695,899.81
  5. Step 5: Solve for x
    x = 184,695,899.81/20,728.99
  6. Step 6: Final answer
    x = 8,910.03

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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.