Home / 21,769.36-30,042.36-12,338.56

Finding the Fourth Proportional to 21,769.36, 30,042.36 and 12,338.56

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Solution

The fourth proportional to 21,769.36, 30,042.36 and 12,338.56 is: 17,027.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,769.36 : 30,042.36 = 12,338.56 : x
  2. Step 2: Convert to fraction form
    21,769.36/30,042.36 = 12,338.56/x
  3. Step 3: Cross multiply
    21,769.36x = 30,042.36 × 12,338.56
  4. Step 4: Simplify right side
    21,769.36x = 370,679,461.40
  5. Step 5: Solve for x
    x = 370,679,461.40/21,769.36
  6. Step 6: Final answer
    x = 17,027.58

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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.