Home / 15,662.34-21,601.48-13,769.92

Finding the Fourth Proportional to 15,662.34, 21,601.48 and 13,769.92

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Solution

The fourth proportional to 15,662.34, 21,601.48 and 13,769.92 is: 18,991.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,662.34 : 21,601.48 = 13,769.92 : x
  2. Step 2: Convert to fraction form
    15,662.34/21,601.48 = 13,769.92/x
  3. Step 3: Cross multiply
    15,662.34x = 21,601.48 × 13,769.92
  4. Step 4: Simplify right side
    15,662.34x = 297,450,651.48
  5. Step 5: Solve for x
    x = 297,450,651.48/15,662.34
  6. Step 6: Final answer
    x = 18,991.46

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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.