Home / 21,506.13-29,675.43-11,945.30

Finding the Fourth Proportional to 21,506.13, 29,675.43 and 11,945.30

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Solution

The fourth proportional to 21,506.13, 29,675.43 and 11,945.30 is: 16,482.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,506.13 : 29,675.43 = 11,945.30 : x
  2. Step 2: Convert to fraction form
    21,506.13/29,675.43 = 11,945.30/x
  3. Step 3: Cross multiply
    21,506.13x = 29,675.43 × 11,945.30
  4. Step 4: Simplify right side
    21,506.13x = 354,481,765.60
  5. Step 5: Solve for x
    x = 354,481,765.60/21,506.13
  6. Step 6: Final answer
    x = 16,482.82

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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.