Home / 21,045.30-29,042.83-11,485.68

Finding the Fourth Proportional to 21,045.30, 29,042.83 and 11,485.68

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Solution

The fourth proportional to 21,045.30, 29,042.83 and 11,485.68 is: 15,850.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.30 : 29,042.83 = 11,485.68 : x
  2. Step 2: Convert to fraction form
    21,045.30/29,042.83 = 11,485.68/x
  3. Step 3: Cross multiply
    21,045.30x = 29,042.83 × 11,485.68
  4. Step 4: Simplify right side
    21,045.30x = 333,576,651.67
  5. Step 5: Solve for x
    x = 333,576,651.67/21,045.30
  6. Step 6: Final answer
    x = 15,850.41

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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.