Home / 21,817.45-30,107.24-13,333.76

Finding the Fourth Proportional to 21,817.45, 30,107.24 and 13,333.76

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Solution

The fourth proportional to 21,817.45, 30,107.24 and 13,333.76 is: 18,400.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,817.45 : 30,107.24 = 13,333.76 : x
  2. Step 2: Convert to fraction form
    21,817.45/30,107.24 = 13,333.76/x
  3. Step 3: Cross multiply
    21,817.45x = 30,107.24 × 13,333.76
  4. Step 4: Simplify right side
    21,817.45x = 401,442,902.48
  5. Step 5: Solve for x
    x = 401,442,902.48/21,817.45
  6. Step 6: Final answer
    x = 18,400.08

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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.