Home / 21,304.02-29,399.90-11,872.59

Finding the Fourth Proportional to 21,304.02, 29,399.90 and 11,872.59

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Solution

The fourth proportional to 21,304.02, 29,399.90 and 11,872.59 is: 16,384.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,304.02 : 29,399.90 = 11,872.59 : x
  2. Step 2: Convert to fraction form
    21,304.02/29,399.90 = 11,872.59/x
  3. Step 3: Cross multiply
    21,304.02x = 29,399.90 × 11,872.59
  4. Step 4: Simplify right side
    21,304.02x = 349,052,958.74
  5. Step 5: Solve for x
    x = 349,052,958.74/21,304.02
  6. Step 6: Final answer
    x = 16,384.37

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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.