Home / 21,885.96-30,200.94-12,932.76

Finding the Fourth Proportional to 21,885.96, 30,200.94 and 12,932.76

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Solution

The fourth proportional to 21,885.96, 30,200.94 and 12,932.76 is: 17,846.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,885.96 : 30,200.94 = 12,932.76 : x
  2. Step 2: Convert to fraction form
    21,885.96/30,200.94 = 12,932.76/x
  3. Step 3: Cross multiply
    21,885.96x = 30,200.94 × 12,932.76
  4. Step 4: Simplify right side
    21,885.96x = 390,581,508.79
  5. Step 5: Solve for x
    x = 390,581,508.79/21,885.96
  6. Step 6: Final answer
    x = 17,846.21

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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.