Home / 20,633.04-28,480.37-12,134.79

Finding the Fourth Proportional to 20,633.04, 28,480.37 and 12,134.79

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Solution

The fourth proportional to 20,633.04, 28,480.37 and 12,134.79 is: 16,749.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.04 : 28,480.37 = 12,134.79 : x
  2. Step 2: Convert to fraction form
    20,633.04/28,480.37 = 12,134.79/x
  3. Step 3: Cross multiply
    20,633.04x = 28,480.37 × 12,134.79
  4. Step 4: Simplify right side
    20,633.04x = 345,603,248.40
  5. Step 5: Solve for x
    x = 345,603,248.40/20,633.04
  6. Step 6: Final answer
    x = 16,749.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.