Home / 15,542.44-21,450.90-9,881.80

Finding the Fourth Proportional to 15,542.44, 21,450.90 and 9,881.80

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Solution

The fourth proportional to 15,542.44, 21,450.90 and 9,881.80 is: 13,638.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,542.44 : 21,450.90 = 9,881.80 : x
  2. Step 2: Convert to fraction form
    15,542.44/21,450.90 = 9,881.80/x
  3. Step 3: Cross multiply
    15,542.44x = 21,450.90 × 9,881.80
  4. Step 4: Simplify right side
    15,542.44x = 211,973,503.62
  5. Step 5: Solve for x
    x = 211,973,503.62/15,542.44
  6. Step 6: Final answer
    x = 13,638.37

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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.