Home / 28,819.61-39,770.98-16,072.81

Finding the Fourth Proportional to 28,819.61, 39,770.98 and 16,072.81

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Solution

The fourth proportional to 28,819.61, 39,770.98 and 16,072.81 is: 22,180.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,819.61 : 39,770.98 = 16,072.81 : x
  2. Step 2: Convert to fraction form
    28,819.61/39,770.98 = 16,072.81/x
  3. Step 3: Cross multiply
    28,819.61x = 39,770.98 × 16,072.81
  4. Step 4: Simplify right side
    28,819.61x = 639,231,125.83
  5. Step 5: Solve for x
    x = 639,231,125.83/28,819.61
  6. Step 6: Final answer
    x = 22,180.43

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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.