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Finding the Fourth Proportional to 15,083.19, 20,814.48 and 8,368.67

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Solution

The fourth proportional to 15,083.19, 20,814.48 and 8,368.67 is: 11,548.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,083.19 : 20,814.48 = 8,368.67 : x
  2. Step 2: Convert to fraction form
    15,083.19/20,814.48 = 8,368.67/x
  3. Step 3: Cross multiply
    15,083.19x = 20,814.48 × 8,368.67
  4. Step 4: Simplify right side
    15,083.19x = 174,189,560.64
  5. Step 5: Solve for x
    x = 174,189,560.64/15,083.19
  6. Step 6: Final answer
    x = 11,548.59

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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.