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Finding the Fourth Proportional to 15,000.14, 20,703.08 and 8,631.02

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Solution

The fourth proportional to 15,000.14, 20,703.08 and 8,631.02 is: 11,912.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000.14 : 20,703.08 = 8,631.02 : x
  2. Step 2: Convert to fraction form
    15,000.14/20,703.08 = 8,631.02/x
  3. Step 3: Cross multiply
    15,000.14x = 20,703.08 × 8,631.02
  4. Step 4: Simplify right side
    15,000.14x = 178,688,770.88
  5. Step 5: Solve for x
    x = 178,688,770.88/15,000.14
  6. Step 6: Final answer
    x = 11,912.47

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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.