Home / 28,720.30-43,062.80-11,169.68

Finding the Fourth Proportional to 28,720.30, 43,062.80 and 11,169.68

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Solution

The fourth proportional to 28,720.30, 43,062.80 and 11,169.68 is: 16,747.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,720.30 : 43,062.80 = 11,169.68 : x
  2. Step 2: Convert to fraction form
    28,720.30/43,062.80 = 11,169.68/x
  3. Step 3: Cross multiply
    28,720.30x = 43,062.80 × 11,169.68
  4. Step 4: Simplify right side
    28,720.30x = 480,997,695.90
  5. Step 5: Solve for x
    x = 480,997,695.90/28,720.30
  6. Step 6: Final answer
    x = 16,747.66

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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.