Home / 21,182.50-29,231.85-11,751.13

Finding the Fourth Proportional to 21,182.50, 29,231.85 and 11,751.13

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Solution

The fourth proportional to 21,182.50, 29,231.85 and 11,751.13 is: 16,216.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,182.50 : 29,231.85 = 11,751.13 : x
  2. Step 2: Convert to fraction form
    21,182.50/29,231.85 = 11,751.13/x
  3. Step 3: Cross multiply
    21,182.50x = 29,231.85 × 11,751.13
  4. Step 4: Simplify right side
    21,182.50x = 343,507,269.49
  5. Step 5: Solve for x
    x = 343,507,269.49/21,182.50
  6. Step 6: Final answer
    x = 16,216.56

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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.