Home / 21,561.72-29,754.84-12,130.24

Finding the Fourth Proportional to 21,561.72, 29,754.84 and 12,130.24

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Solution

The fourth proportional to 21,561.72, 29,754.84 and 12,130.24 is: 16,739.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561.72 : 29,754.84 = 12,130.24 : x
  2. Step 2: Convert to fraction form
    21,561.72/29,754.84 = 12,130.24/x
  3. Step 3: Cross multiply
    21,561.72x = 29,754.84 × 12,130.24
  4. Step 4: Simplify right side
    21,561.72x = 360,933,350.36
  5. Step 5: Solve for x
    x = 360,933,350.36/21,561.72
  6. Step 6: Final answer
    x = 16,739.54

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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.