Home / 21,424.72-29,568.90-11,995.24

Finding the Fourth Proportional to 21,424.72, 29,568.90 and 11,995.24

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Solution

The fourth proportional to 21,424.72, 29,568.90 and 11,995.24 is: 16,554.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.72 : 29,568.90 = 11,995.24 : x
  2. Step 2: Convert to fraction form
    21,424.72/29,568.90 = 11,995.24/x
  3. Step 3: Cross multiply
    21,424.72x = 29,568.90 × 11,995.24
  4. Step 4: Simplify right side
    21,424.72x = 354,686,052.04
  5. Step 5: Solve for x
    x = 354,686,052.04/21,424.72
  6. Step 6: Final answer
    x = 16,554.99

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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.