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Finding the Fourth Proportional to 15,362.22, 21,202.91 and 9,977.14

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Solution

The fourth proportional to 15,362.22, 21,202.91 and 9,977.14 is: 13,770.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,362.22 : 21,202.91 = 9,977.14 : x
  2. Step 2: Convert to fraction form
    15,362.22/21,202.91 = 9,977.14/x
  3. Step 3: Cross multiply
    15,362.22x = 21,202.91 × 9,977.14
  4. Step 4: Simplify right side
    15,362.22x = 211,544,401.48
  5. Step 5: Solve for x
    x = 211,544,401.48/15,362.22
  6. Step 6: Final answer
    x = 13,770.43

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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.