Home / 21,218.06-29,280.94-11,658.56

Finding the Fourth Proportional to 21,218.06, 29,280.94 and 11,658.56

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Solution

The fourth proportional to 21,218.06, 29,280.94 and 11,658.56 is: 16,088.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.06 : 29,280.94 = 11,658.56 : x
  2. Step 2: Convert to fraction form
    21,218.06/29,280.94 = 11,658.56/x
  3. Step 3: Cross multiply
    21,218.06x = 29,280.94 × 11,658.56
  4. Step 4: Simplify right side
    21,218.06x = 341,373,566.70
  5. Step 5: Solve for x
    x = 341,373,566.70/21,218.06
  6. Step 6: Final answer
    x = 16,088.82

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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.