Home / 21,182.56-29,236-12,235.84

Finding the Fourth Proportional to 21,182.56, 29,236 and 12,235.84

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Solution

The fourth proportional to 21,182.56, 29,236 and 12,235.84 is: 16,887.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,182.56 : 29,236 = 12,235.84 : x
  2. Step 2: Convert to fraction form
    21,182.56/29,236 = 12,235.84/x
  3. Step 3: Cross multiply
    21,182.56x = 29,236 × 12,235.84
  4. Step 4: Simplify right side
    21,182.56x = 357,727,018.24
  5. Step 5: Solve for x
    x = 357,727,018.24/21,182.56
  6. Step 6: Final answer
    x = 16,887.81

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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.