Home / 28,535.18-42,790.41-21,965.99

Finding the Fourth Proportional to 28,535.18, 42,790.41 and 21,965.99

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Solution

The fourth proportional to 28,535.18, 42,790.41 and 21,965.99 is: 32,939.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,535.18 : 42,790.41 = 21,965.99 : x
  2. Step 2: Convert to fraction form
    28,535.18/42,790.41 = 21,965.99/x
  3. Step 3: Cross multiply
    28,535.18x = 42,790.41 × 21,965.99
  4. Step 4: Simplify right side
    28,535.18x = 939,933,504.20
  5. Step 5: Solve for x
    x = 939,933,504.20/28,535.18
  6. Step 6: Final answer
    x = 32,939.47

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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.