Home / 28,822.05-39,780.81-18,732.96

Finding the Fourth Proportional to 28,822.05, 39,780.81 and 18,732.96

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Solution

The fourth proportional to 28,822.05, 39,780.81 and 18,732.96 is: 25,855.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,822.05 : 39,780.81 = 18,732.96 : x
  2. Step 2: Convert to fraction form
    28,822.05/39,780.81 = 18,732.96/x
  3. Step 3: Cross multiply
    28,822.05x = 39,780.81 × 18,732.96
  4. Step 4: Simplify right side
    28,822.05x = 745,212,322.50
  5. Step 5: Solve for x
    x = 745,212,322.50/28,822.05
  6. Step 6: Final answer
    x = 25,855.63

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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.