Home / 21,122.15-29,145.98-16,826.18

Finding the Fourth Proportional to 21,122.15, 29,145.98 and 16,826.18

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Solution

The fourth proportional to 21,122.15, 29,145.98 and 16,826.18 is: 23,218.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122.15 : 29,145.98 = 16,826.18 : x
  2. Step 2: Convert to fraction form
    21,122.15/29,145.98 = 16,826.18/x
  3. Step 3: Cross multiply
    21,122.15x = 29,145.98 × 16,826.18
  4. Step 4: Simplify right side
    21,122.15x = 490,415,485.65
  5. Step 5: Solve for x
    x = 490,415,485.65/21,122.15
  6. Step 6: Final answer
    x = 23,218.07

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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.