Home / 15,347.26-21,180-8,633.98

Finding the Fourth Proportional to 15,347.26, 21,180 and 8,633.98

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Solution

The fourth proportional to 15,347.26, 21,180 and 8,633.98 is: 11,915.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.26 : 21,180 = 8,633.98 : x
  2. Step 2: Convert to fraction form
    15,347.26/21,180 = 8,633.98/x
  3. Step 3: Cross multiply
    15,347.26x = 21,180 × 8,633.98
  4. Step 4: Simplify right side
    15,347.26x = 182,867,696.40
  5. Step 5: Solve for x
    x = 182,867,696.40/15,347.26
  6. Step 6: Final answer
    x = 11,915.33

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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.