Home / 28,757.83-39,685.75-16,818.70

Finding the Fourth Proportional to 28,757.83, 39,685.75 and 16,818.70

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Solution

The fourth proportional to 28,757.83, 39,685.75 and 16,818.70 is: 23,209.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,757.83 : 39,685.75 = 16,818.70 : x
  2. Step 2: Convert to fraction form
    28,757.83/39,685.75 = 16,818.70/x
  3. Step 3: Cross multiply
    28,757.83x = 39,685.75 × 16,818.70
  4. Step 4: Simplify right side
    28,757.83x = 667,462,441.00
  5. Step 5: Solve for x
    x = 667,462,441.00/28,757.83
  6. Step 6: Final answer
    x = 23,209.77

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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.