Home / 28,136.52-42,207.20-7,360

Finding the Fourth Proportional to 28,136.52, 42,207.20 and 7,360

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Solution

The fourth proportional to 28,136.52, 42,207.20 and 7,360 is: 11,040.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.52 : 42,207.20 = 7,360 : x
  2. Step 2: Convert to fraction form
    28,136.52/42,207.20 = 7,360/x
  3. Step 3: Cross multiply
    28,136.52x = 42,207.20 × 7,360
  4. Step 4: Simplify right side
    28,136.52x = 310,644,992
  5. Step 5: Solve for x
    x = 310,644,992/28,136.52
  6. Step 6: Final answer
    x = 11,040.63

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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.