Home / 21,836.62-30,102.77-15,443.29

Finding the Fourth Proportional to 21,836.62, 30,102.77 and 15,443.29

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Solution

The fourth proportional to 21,836.62, 30,102.77 and 15,443.29 is: 21,289.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836.62 : 30,102.77 = 15,443.29 : x
  2. Step 2: Convert to fraction form
    21,836.62/30,102.77 = 15,443.29/x
  3. Step 3: Cross multiply
    21,836.62x = 30,102.77 × 15,443.29
  4. Step 4: Simplify right side
    21,836.62x = 464,885,883.15
  5. Step 5: Solve for x
    x = 464,885,883.15/21,836.62
  6. Step 6: Final answer
    x = 21,289.28

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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.