Home / 21,911.72-30,252.30-19,549.76

Finding the Fourth Proportional to 21,911.72, 30,252.30 and 19,549.76

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Solution

The fourth proportional to 21,911.72, 30,252.30 and 19,549.76 is: 26,991.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,911.72 : 30,252.30 = 19,549.76 : x
  2. Step 2: Convert to fraction form
    21,911.72/30,252.30 = 19,549.76/x
  3. Step 3: Cross multiply
    21,911.72x = 30,252.30 × 19,549.76
  4. Step 4: Simplify right side
    21,911.72x = 591,425,204.45
  5. Step 5: Solve for x
    x = 591,425,204.45/21,911.72
  6. Step 6: Final answer
    x = 26,991.27

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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.