Home / 28,712.88-43,089.12-11,182.80

Finding the Fourth Proportional to 28,712.88, 43,089.12 and 11,182.80

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Solution

The fourth proportional to 28,712.88, 43,089.12 and 11,182.80 is: 16,781.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.88 : 43,089.12 = 11,182.80 : x
  2. Step 2: Convert to fraction form
    28,712.88/43,089.12 = 11,182.80/x
  3. Step 3: Cross multiply
    28,712.88x = 43,089.12 × 11,182.80
  4. Step 4: Simplify right side
    28,712.88x = 481,857,011.14
  5. Step 5: Solve for x
    x = 481,857,011.14/28,712.88
  6. Step 6: Final answer
    x = 16,781.91

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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.