Home / 21,983.19-30,334.80-13,029.24

Finding the Fourth Proportional to 21,983.19, 30,334.80 and 13,029.24

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Solution

The fourth proportional to 21,983.19, 30,334.80 and 13,029.24 is: 17,979.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,983.19 : 30,334.80 = 13,029.24 : x
  2. Step 2: Convert to fraction form
    21,983.19/30,334.80 = 13,029.24/x
  3. Step 3: Cross multiply
    21,983.19x = 30,334.80 × 13,029.24
  4. Step 4: Simplify right side
    21,983.19x = 395,239,389.55
  5. Step 5: Solve for x
    x = 395,239,389.55/21,983.19
  6. Step 6: Final answer
    x = 17,979.16

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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.