Home / 15,702.26-21,668.31-8,987.36

Finding the Fourth Proportional to 15,702.26, 21,668.31 and 8,987.36

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Solution

The fourth proportional to 15,702.26, 21,668.31 and 8,987.36 is: 12,402.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,702.26 : 21,668.31 = 8,987.36 : x
  2. Step 2: Convert to fraction form
    15,702.26/21,668.31 = 8,987.36/x
  3. Step 3: Cross multiply
    15,702.26x = 21,668.31 × 8,987.36
  4. Step 4: Simplify right side
    15,702.26x = 194,740,794.22
  5. Step 5: Solve for x
    x = 194,740,794.22/15,702.26
  6. Step 6: Final answer
    x = 12,402.09

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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.