Home / 28,814.88-39,765.60-16,240.80

Finding the Fourth Proportional to 28,814.88, 39,765.60 and 16,240.80

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Solution

The fourth proportional to 28,814.88, 39,765.60 and 16,240.80 is: 22,412.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,814.88 : 39,765.60 = 16,240.80 : x
  2. Step 2: Convert to fraction form
    28,814.88/39,765.60 = 16,240.80/x
  3. Step 3: Cross multiply
    28,814.88x = 39,765.60 × 16,240.80
  4. Step 4: Simplify right side
    28,814.88x = 645,825,156.48
  5. Step 5: Solve for x
    x = 645,825,156.48/28,814.88
  6. Step 6: Final answer
    x = 22,412.90

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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.