Home / 21,654.13-29,883.17-12,222.76

Finding the Fourth Proportional to 21,654.13, 29,883.17 and 12,222.76

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Solution

The fourth proportional to 21,654.13, 29,883.17 and 12,222.76 is: 16,867.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,654.13 : 29,883.17 = 12,222.76 : x
  2. Step 2: Convert to fraction form
    21,654.13/29,883.17 = 12,222.76/x
  3. Step 3: Cross multiply
    21,654.13x = 29,883.17 × 12,222.76
  4. Step 4: Simplify right side
    21,654.13x = 365,254,814.95
  5. Step 5: Solve for x
    x = 365,254,814.95/21,654.13
  6. Step 6: Final answer
    x = 16,867.67

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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.