Home / 15,729.19-21,694.89-10,684.60

Finding the Fourth Proportional to 15,729.19, 21,694.89 and 10,684.60

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Solution

The fourth proportional to 15,729.19, 21,694.89 and 10,684.60 is: 14,737.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,729.19 : 21,694.89 = 10,684.60 : x
  2. Step 2: Convert to fraction form
    15,729.19/21,694.89 = 10,684.60/x
  3. Step 3: Cross multiply
    15,729.19x = 21,694.89 × 10,684.60
  4. Step 4: Simplify right side
    15,729.19x = 231,801,221.69
  5. Step 5: Solve for x
    x = 231,801,221.69/15,729.19
  6. Step 6: Final answer
    x = 14,737.01

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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.