Home / 21,189.34-31,789.25-14,961.56

Finding the Fourth Proportional to 21,189.34, 31,789.25 and 14,961.56

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Solution

The fourth proportional to 21,189.34, 31,789.25 and 14,961.56 is: 22,446.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.34 : 31,789.25 = 14,961.56 : x
  2. Step 2: Convert to fraction form
    21,189.34/31,789.25 = 14,961.56/x
  3. Step 3: Cross multiply
    21,189.34x = 31,789.25 × 14,961.56
  4. Step 4: Simplify right side
    21,189.34x = 475,616,612.28
  5. Step 5: Solve for x
    x = 475,616,612.28/21,189.34
  6. Step 6: Final answer
    x = 22,446.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.