Home / 20,670.36-31,004.85-8,983.59

Finding the Fourth Proportional to 20,670.36, 31,004.85 and 8,983.59

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Solution

The fourth proportional to 20,670.36, 31,004.85 and 8,983.59 is: 13,475.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.36 : 31,004.85 = 8,983.59 : x
  2. Step 2: Convert to fraction form
    20,670.36/31,004.85 = 8,983.59/x
  3. Step 3: Cross multiply
    20,670.36x = 31,004.85 × 8,983.59
  4. Step 4: Simplify right side
    20,670.36x = 278,534,860.41
  5. Step 5: Solve for x
    x = 278,534,860.41/20,670.36
  6. Step 6: Final answer
    x = 13,475.09

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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.