Home / 21,355.25-29,470.64-11,795.63

Finding the Fourth Proportional to 21,355.25, 29,470.64 and 11,795.63

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Solution

The fourth proportional to 21,355.25, 29,470.64 and 11,795.63 is: 16,278.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,355.25 : 29,470.64 = 11,795.63 : x
  2. Step 2: Convert to fraction form
    21,355.25/29,470.64 = 11,795.63/x
  3. Step 3: Cross multiply
    21,355.25x = 29,470.64 × 11,795.63
  4. Step 4: Simplify right side
    21,355.25x = 347,624,558.97
  5. Step 5: Solve for x
    x = 347,624,558.97/21,355.25
  6. Step 6: Final answer
    x = 16,278.18

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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.