Home / 21,739.18-30,004.73-13,244.06

Finding the Fourth Proportional to 21,739.18, 30,004.73 and 13,244.06

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Solution

The fourth proportional to 21,739.18, 30,004.73 and 13,244.06 is: 18,279.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,739.18 : 30,004.73 = 13,244.06 : x
  2. Step 2: Convert to fraction form
    21,739.18/30,004.73 = 13,244.06/x
  3. Step 3: Cross multiply
    21,739.18x = 30,004.73 × 13,244.06
  4. Step 4: Simplify right side
    21,739.18x = 397,384,444.40
  5. Step 5: Solve for x
    x = 397,384,444.40/21,739.18
  6. Step 6: Final answer
    x = 18,279.64

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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.