Home / 21,186.96-29,236.80-12,237.24

Finding the Fourth Proportional to 21,186.96, 29,236.80 and 12,237.24

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Solution

The fourth proportional to 21,186.96, 29,236.80 and 12,237.24 is: 16,886.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.96 : 29,236.80 = 12,237.24 : x
  2. Step 2: Convert to fraction form
    21,186.96/29,236.80 = 12,237.24/x
  3. Step 3: Cross multiply
    21,186.96x = 29,236.80 × 12,237.24
  4. Step 4: Simplify right side
    21,186.96x = 357,777,738.43
  5. Step 5: Solve for x
    x = 357,777,738.43/21,186.96
  6. Step 6: Final answer
    x = 16,886.70

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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.