Home / 21,424.01-29,563.70-12,470.09

Finding the Fourth Proportional to 21,424.01, 29,563.70 and 12,470.09

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Solution

The fourth proportional to 21,424.01, 29,563.70 and 12,470.09 is: 17,207.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.01 : 29,563.70 = 12,470.09 : x
  2. Step 2: Convert to fraction form
    21,424.01/29,563.70 = 12,470.09/x
  3. Step 3: Cross multiply
    21,424.01x = 29,563.70 × 12,470.09
  4. Step 4: Simplify right side
    21,424.01x = 368,661,789.56
  5. Step 5: Solve for x
    x = 368,661,789.56/21,424.01
  6. Step 6: Final answer
    x = 17,207.88

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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.