Home / 21,082.68-31,628.34-14,511.96

Finding the Fourth Proportional to 21,082.68, 31,628.34 and 14,511.96

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Solution

The fourth proportional to 21,082.68, 31,628.34 and 14,511.96 is: 21,770.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082.68 : 31,628.34 = 14,511.96 : x
  2. Step 2: Convert to fraction form
    21,082.68/31,628.34 = 14,511.96/x
  3. Step 3: Cross multiply
    21,082.68x = 31,628.34 × 14,511.96
  4. Step 4: Simplify right side
    21,082.68x = 458,989,204.95
  5. Step 5: Solve for x
    x = 458,989,204.95/21,082.68
  6. Step 6: Final answer
    x = 21,770.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.