Home / 28,786.86-39,720.60-16,039.72

Finding the Fourth Proportional to 28,786.86, 39,720.60 and 16,039.72

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Solution

The fourth proportional to 28,786.86, 39,720.60 and 16,039.72 is: 22,131.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,786.86 : 39,720.60 = 16,039.72 : x
  2. Step 2: Convert to fraction form
    28,786.86/39,720.60 = 16,039.72/x
  3. Step 3: Cross multiply
    28,786.86x = 39,720.60 × 16,039.72
  4. Step 4: Simplify right side
    28,786.86x = 637,107,302.23
  5. Step 5: Solve for x
    x = 637,107,302.23/28,786.86
  6. Step 6: Final answer
    x = 22,131.88

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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.