Home / 15,531.49-21,433.71-8,817.31

Finding the Fourth Proportional to 15,531.49, 21,433.71 and 8,817.31

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Solution

The fourth proportional to 15,531.49, 21,433.71 and 8,817.31 is: 12,168.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.49 : 21,433.71 = 8,817.31 : x
  2. Step 2: Convert to fraction form
    15,531.49/21,433.71 = 8,817.31/x
  3. Step 3: Cross multiply
    15,531.49x = 21,433.71 × 8,817.31
  4. Step 4: Simplify right side
    15,531.49x = 188,987,514.27
  5. Step 5: Solve for x
    x = 188,987,514.27/15,531.49
  6. Step 6: Final answer
    x = 12,168.03

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1.5x scale

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.