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Finding the Fourth Proportional to 15,795.99, 21,800.16 and 9,082.80

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Solution

The fourth proportional to 15,795.99, 21,800.16 and 9,082.80 is: 12,535.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,795.99 : 21,800.16 = 9,082.80 : x
  2. Step 2: Convert to fraction form
    15,795.99/21,800.16 = 9,082.80/x
  3. Step 3: Cross multiply
    15,795.99x = 21,800.16 × 9,082.80
  4. Step 4: Simplify right side
    15,795.99x = 198,006,493.25
  5. Step 5: Solve for x
    x = 198,006,493.25/15,795.99
  6. Step 6: Final answer
    x = 12,535.24

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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.