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Finding the Fourth Proportional to 20,038.64, 30,060.70 and 8,349.13

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Solution

The fourth proportional to 20,038.64, 30,060.70 and 8,349.13 is: 12,524.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,038.64 : 30,060.70 = 8,349.13 : x
  2. Step 2: Convert to fraction form
    20,038.64/30,060.70 = 8,349.13/x
  3. Step 3: Cross multiply
    20,038.64x = 30,060.70 × 8,349.13
  4. Step 4: Simplify right side
    20,038.64x = 250,980,692.19
  5. Step 5: Solve for x
    x = 250,980,692.19/20,038.64
  6. Step 6: Final answer
    x = 12,524.84

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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.