Home / 19,821.78-27,349.92-13,453.29

Finding the Fourth Proportional to 19,821.78, 27,349.92 and 13,453.29

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Solution

The fourth proportional to 19,821.78, 27,349.92 and 13,453.29 is: 18,562.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,821.78 : 27,349.92 = 13,453.29 : x
  2. Step 2: Convert to fraction form
    19,821.78/27,349.92 = 13,453.29/x
  3. Step 3: Cross multiply
    19,821.78x = 27,349.92 × 13,453.29
  4. Step 4: Simplify right side
    19,821.78x = 367,946,405.24
  5. Step 5: Solve for x
    x = 367,946,405.24/19,821.78
  6. Step 6: Final answer
    x = 18,562.73

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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.