Home / 19,816.32-27,342.03-13,443.78

Finding the Fourth Proportional to 19,816.32, 27,342.03 and 13,443.78

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Solution

The fourth proportional to 19,816.32, 27,342.03 and 13,443.78 is: 18,549.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,816.32 : 27,342.03 = 13,443.78 : x
  2. Step 2: Convert to fraction form
    19,816.32/27,342.03 = 13,443.78/x
  3. Step 3: Cross multiply
    19,816.32x = 27,342.03 × 13,443.78
  4. Step 4: Simplify right side
    19,816.32x = 367,580,236.07
  5. Step 5: Solve for x
    x = 367,580,236.07/19,816.32
  6. Step 6: Final answer
    x = 18,549.37

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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.