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Finding the Fourth Proportional to 15,082.98, 20,814.68 and 8,368.80

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Solution

The fourth proportional to 15,082.98, 20,814.68 and 8,368.80 is: 11,549.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,082.98 : 20,814.68 = 8,368.80 : x
  2. Step 2: Convert to fraction form
    15,082.98/20,814.68 = 8,368.80/x
  3. Step 3: Cross multiply
    15,082.98x = 20,814.68 × 8,368.80
  4. Step 4: Simplify right side
    15,082.98x = 174,193,914.91
  5. Step 5: Solve for x
    x = 174,193,914.91/15,082.98
  6. Step 6: Final answer
    x = 11,549.04

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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.