Home / 28,239.96-42,351.30-19,530.84

Finding the Fourth Proportional to 28,239.96, 42,351.30 and 19,530.84

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Solution

The fourth proportional to 28,239.96, 42,351.30 and 19,530.84 is: 29,290.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239.96 : 42,351.30 = 19,530.84 : x
  2. Step 2: Convert to fraction form
    28,239.96/42,351.30 = 19,530.84/x
  3. Step 3: Cross multiply
    28,239.96x = 42,351.30 × 19,530.84
  4. Step 4: Simplify right side
    28,239.96x = 827,156,464.09
  5. Step 5: Solve for x
    x = 827,156,464.09/28,239.96
  6. Step 6: Final answer
    x = 29,290.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.