Home / 21,360.09-29,474.74-12,409.49

Finding the Fourth Proportional to 21,360.09, 29,474.74 and 12,409.49

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Solution

The fourth proportional to 21,360.09, 29,474.74 and 12,409.49 is: 17,123.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,360.09 : 29,474.74 = 12,409.49 : x
  2. Step 2: Convert to fraction form
    21,360.09/29,474.74 = 12,409.49/x
  3. Step 3: Cross multiply
    21,360.09x = 29,474.74 × 12,409.49
  4. Step 4: Simplify right side
    21,360.09x = 365,766,491.28
  5. Step 5: Solve for x
    x = 365,766,491.28/21,360.09
  6. Step 6: Final answer
    x = 17,123.83

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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.