Home / 28,723.61-39,628.90-16,780.16

Finding the Fourth Proportional to 28,723.61, 39,628.90 and 16,780.16

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Solution

The fourth proportional to 28,723.61, 39,628.90 and 16,780.16 is: 23,150.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,723.61 : 39,628.90 = 16,780.16 : x
  2. Step 2: Convert to fraction form
    28,723.61/39,628.90 = 16,780.16/x
  3. Step 3: Cross multiply
    28,723.61x = 39,628.90 × 16,780.16
  4. Step 4: Simplify right side
    28,723.61x = 664,979,282.62
  5. Step 5: Solve for x
    x = 664,979,282.62/28,723.61
  6. Step 6: Final answer
    x = 23,150.96

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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.