Home / 28,311.29-42,435.80-11,662.25

Finding the Fourth Proportional to 28,311.29, 42,435.80 and 11,662.25

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Solution

The fourth proportional to 28,311.29, 42,435.80 and 11,662.25 is: 17,480.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,311.29 : 42,435.80 = 11,662.25 : x
  2. Step 2: Convert to fraction form
    28,311.29/42,435.80 = 11,662.25/x
  3. Step 3: Cross multiply
    28,311.29x = 42,435.80 × 11,662.25
  4. Step 4: Simplify right side
    28,311.29x = 494,896,681.79
  5. Step 5: Solve for x
    x = 494,896,681.79/28,311.29
  6. Step 6: Final answer
    x = 17,480.54

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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.